Make method(:throw_failure) the default handler

lib/dry/operation.rb

@@ -176,11 +176,12 @@ def step(result)
     # failure is encountered. It's meant to be used within the {#steps} block
     # commonly wrapping a sub-set of {#step} calls.
     #
-    # @param handler [#call] a callable that will be called with the encountered failure
+    # @param handler [#call] a callable that will be called with the encountered failure.
+    #   By default, it throws `FAILURE_TAG` with the failure.
     # @yieldreturn [Object]
     # @return [Object] the block's return value when it's not a failure or the handler's
     #   return value when the block returns a failure
-    def intercepting_failure(handler, &block)
+    def intercepting_failure(handler = method(:throw_failure), &block)
       output = catching_failure(&block)
 
       case output

lib/dry/operation/extensions/active_record.rb

@@ -111,7 +111,7 @@ def included(klass)
               #   @see Dry::Operation#steps
               #   @see https://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/DatabaseStatements.html#method-i-transaction
               klass.define_method(:transaction) do |connection = default_connection, **opts, &steps|
-                intercepting_failure(method(:throw_failure)) do
+                intercepting_failure do
                   result = nil
                   connection.transaction(**options.merge(opts)) do
                     intercepting_failure(->(failure) {

lib/dry/operation/extensions/rom.rb

@@ -103,7 +103,7 @@ def included(klass)
                   that returns the ROM container
                 MSG
 
-                intercepting_failure(method(:throw_failure)) do
+                intercepting_failure do
                   result = nil
                   rom.gateways[gateway].transaction do |t|
                     intercepting_failure(->(failure) {