Enable InternalAffairs/CopEnabled cop

Since #1434 made RuboCop 1.72+ a runtime requirement, `cop_enabled?` can now be used.

Author: koic

.rubocop_todo.yml

@@ -6,13 +6,6 @@
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
-# Offense count: 2
-# This cop supports safe autocorrection (--autocorrect).
-InternalAffairs/CopEnabled:
-  Exclude:
-    - 'lib/rubocop/cop/rails/blank.rb'
-    - 'lib/rubocop/cop/rails/present.rb'
-
 # Offense count: 7
 InternalAffairs/NodeDestructuring:
   Exclude:

lib/rubocop/cop/rails/blank.rb

@@ -123,7 +123,7 @@ def on_or(node)
         def on_if(node)
           return unless cop_config['UnlessPresent']
           return unless node.unless?
-          return if node.else? && config.for_cop('Style/UnlessElse')['Enabled']
+          return if node.else? && config.cop_enabled?('Style/UnlessElse')
 
           unless_present?(node) do |method_call, receiver|
             range = unless_condition(node, method_call)

lib/rubocop/cop/rails/present.rb

@@ -110,7 +110,7 @@ def on_or(node)
         def on_if(node)
           return unless cop_config['UnlessBlank']
           return unless node.unless?
-          return if node.else? && config.for_cop('Style/UnlessElse')['Enabled']
+          return if node.else? && config.cop_enabled?('Style/UnlessElse')
 
           unless_blank?(node) do |method_call, receiver|
             range = unless_condition(node, method_call)