Restore skipped specs for Prism

This PR restores skipped specs for Prism.
They have already been resolved in Prism, so they can be tested.

spec/rubocop/cop/rails/blank_spec.rb

@@ -2,9 +2,7 @@
 
 RSpec.describe RuboCop::Cop::Rails::Blank, :config do
   shared_examples 'offense' do |source, correction, message|
-    # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-    # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-    it 'registers an offense and corrects', broken_on: :prism do
+    it 'registers an offense and corrects' do
       expect_offense(<<~RUBY, source: source, message: message)
         #{source}
         ^{source} #{message}

spec/rubocop/cop/rails/exit_spec.rb

@@ -8,9 +8,7 @@
     RUBY
   end
 
-  # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-  # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-  it 'registers an offense for an exit! call with no receiver', broken_on: :prism do
+  it 'registers an offense for an exit! call with no receiver' do
     expect_offense(<<~RUBY)
       exit!
       ^^^^^ Do not use `exit` in Rails applications.

spec/rubocop/cop/rails/present_spec.rb

@@ -2,9 +2,7 @@
 
 RSpec.describe RuboCop::Cop::Rails::Present, :config do
   shared_examples 'offense' do |source, correction, message|
-    # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-    # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-    it 'registers an offense and corrects', broken_on: :prism do
+    it 'registers an offense and corrects' do
       expect_offense(<<~RUBY, source: source, message: message)
         #{source}
         ^{source} #{message}

spec/rubocop/cop/rails/safe_navigation_spec.rb

@@ -119,12 +119,7 @@
         it_behaves_like 'autocorrect', 'try! with 2 parameters', '[1, 2].try!(:join, ",")', '[1, 2]&.join(",")'
         it_behaves_like 'autocorrect', 'try! with multiple parameters',
                         '[1, 2].try!(:join, bar, baz)', '[1, 2]&.join(bar, baz)'
-        # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-        # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-        context 'skip test when parser engine is prism', broken_on: :prism do
-          it_behaves_like 'autocorrect', 'try! without receiver', 'try!(:join)', 'self&.join'
-        end
-
+        it_behaves_like 'autocorrect', 'try! without receiver', 'try!(:join)', 'self&.join'
         it_behaves_like 'autocorrect', 'try! with a block',
                         ['[foo, bar].try!(:map) do |e|',
                          '  e.some_method',

spec/rubocop/cop/rails/save_bang_spec.rb

@@ -74,9 +74,7 @@
       end
     end
 
-    # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-    # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-    it "when using #{method} without arguments", broken_on: :prism do
+    it "when using #{method} without arguments" do
       expect_offense(<<~RUBY, method: method)
         #{method}
         ^{method} Use `#{method}!` instead of `#{method}` if the return value is not checked.

spec/rubocop/cop/rails/skips_model_validations_spec.rb

@@ -66,27 +66,21 @@
         RUBY
       end
 
-      # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-      # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-      it "registers an offense for #{method} with `:returning` keyword argument", broken_on: :prism do
+      it "registers an offense for #{method} with `:returning` keyword argument" do
         expect_offense(<<~RUBY, method: method)
           %{method}(attributes, returning: false)
           ^{method} Avoid using `#{method}` because it skips validations.
         RUBY
       end
 
-      # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-      # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-      it "registers an offense for #{method} with `:unique_by` keyword argument", broken_on: :prism do
+      it "registers an offense for #{method} with `:unique_by` keyword argument" do
         expect_offense(<<~RUBY, method: method)
           %{method}(attributes, unique_by: :username)
           ^{method} Avoid using `#{method}` because it skips validations.
         RUBY
       end
 
-      # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-      # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-      it "registers an offense for #{method} with both `:returning` and `:unique_by` keyword arguments", broken_on: :prism do # rubocop:disable Layout/LineLength
+      it "registers an offense for #{method} with both `:returning` and `:unique_by` keyword arguments" do
         expect_offense(<<~RUBY, method: method)
           %{method}(attributes, returning: false, unique_by: :username)
           ^{method} Avoid using `#{method}` because it skips validations.

spec/rubocop/cop/rails/where_exists_spec.rb

@@ -59,9 +59,7 @@
       RUBY
     end
 
-    # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-    # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-    it 'registers an offense when using implicit receiver and arg', broken_on: :prism do
+    it 'registers an offense when using implicit receiver and arg' do
       expect_offense(<<~RUBY)
         where('name = ?', 'john').exists?
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer `exists?(['name = ?', 'john'])` over `where('name = ?', 'john').exists?`.
@@ -155,9 +153,7 @@
       RUBY
     end
 
-    # FIXME: `undefined method `[]' for nil` occurs Prism 0.24.0. It has been resolved in
-    # the development line. This will be resolved in Prism > 0.24.0 and higher releases.
-    it 'registers an offense when using implicit receiver and arg', broken_on: :prism do
+    it 'registers an offense when using implicit receiver and arg' do
       expect_offense(<<~RUBY)
         exists?('name = ?', 'john')
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ Prefer `where('name = ?', 'john').exists?` over `exists?('name = ?', 'john')`.