Fix the remaining specs that include normalization

Author: yaroslav

spec/modelscope/integration/attribute_generated_spec.rb

@@ -1,10 +1,14 @@
 # frozen_string_literal: true
 
 RSpec.describe CallbackHell, "with attribute-generated callbacks and validations" do
+  def normalization_supported?
+    ActiveRecord::Base.respond_to?(:normalizes)
+  end
   subject(:foo) { CallbackHell::Collector.new(Foo, mode: :full).collect }
   subject(:bar) { CallbackHell::Collector.new(Bar, mode: :full).collect }
 
   it "correctly marks the callbacks generated by attributes" do
+    skip "Normalization not supported in this Rails version" unless normalization_supported?
     expect(foo).to have_callback(
       callback_name: :before_validate,
       method_name: :cant_modify_encrypted_attributes_when_frozen,

spec/modelscope/integration/empty_activerecord_spec.rb

@@ -1,6 +1,10 @@
 # frozen_string_literal: true
 
 RSpec.describe CallbackHell, "with an empty ActiveRecord" do
+  def normalization_supported?
+    ActiveRecord::Base.respond_to?(:normalizes)
+  end
+
   let(:options) { {} }
   subject(:ar) { CallbackHell::Collector.new(ApplicationRecord, **options).collect }
 
@@ -18,10 +22,12 @@
         method_name: :cant_modify_encrypted_attributes_when_frozen,
         origin: :rails, inherited: false
       )
-      expect(ar).to have_callback(
-        method_name: :normalize_changed_in_place_attributes,
-        origin: :rails, inherited: false
-      )
+      if normalization_supported?
+        expect(ar).to have_callback(
+          method_name: :normalize_changed_in_place_attributes,
+          origin: :rails, inherited: false
+        )
+      end
     end
   end
 end