[5055] use implicit waits to make sure we are good

plus this will more explicitly tell us whats going on if this doesnt work

https://medium.com/doctolib/hunting-flaky-tests-2-waiting-for-ajax-bd76d79d9ee9

spec/system/notifications/index_spec.rb

@@ -111,13 +111,14 @@
 
       before do
         click_button "Make Reminder"
-        click_button "Confirm"
       end
 
       it "lists followup notifications showing admin current name" do
-        # Wait until page reloads
-        sleep(1)
-        expect(page).to have_content "Resolve Reminder"
+        click_button "Confirm"
+
+        within("#resolve", wait: 5) do
+          expect(page).to have_content "Resolve Reminder"
+        end
 
         visit edit_users_path
         fill_in "Display name", with: created_by_name