Change from AutoCorrect: false to SafeAutoCorrect: false for Rails/RelativeDateConstant

Follow up to rubocop/rubocop#6177.

This `AutoCorrect: false` looks like it was set when there was no way to
safe autocorrect by `SafeAutocorrect: false`.

Author: koic

changelog/change_unmark_autocorrect_false_from_rails_relative_date_constant.md

@@ -0,0 +1 @@
+* [#582](https://github.com/rubocop/rubocop-rails/pull/582): Unmark `AutoCorrect: false` from `Rails/RelativeDateConstant`. ([@koic][])

config/default.yml

@@ -652,9 +652,9 @@ Rails/RefuteMethods:
 Rails/RelativeDateConstant:
   Description: 'Do not assign relative date to constants.'
   Enabled: true
+  SafeAutoCorrect: false
   VersionAdded: '0.48'
-  VersionChanged: '0.59'
-  AutoCorrect: false
+  VersionChanged: '2.13'
 
 Rails/RenderInline:
   Description: 'Prefer using a template over inline rendering.'

docs/modules/ROOT/pages/cops_rails.adoc

@@ -3728,14 +3728,18 @@ refute_equal true, false
 
 | Enabled
 | Yes
-| Yes
+| Yes (Unsafe)
 | 0.48
-| 0.59
+| 2.13
 |===
 
 This cop checks whether constant value isn't relative date.
 Because the relative date will be evaluated only once.
 
+=== Safety
+
+This cop's autocorrection is unsafe because its dependence on the constant is not corrected.
+
 === Examples
 
 [source,ruby]
@@ -3762,16 +3766,6 @@ class SomeClass
 end
 ----
 
-=== Configurable attributes
-
-|===
-| Name | Default value | Configurable values
-
-| AutoCorrect
-| `false`
-| Boolean
-|===
-
 == Rails/RenderInline
 
 |===

lib/rubocop/cop/rails/relative_date_constant.rb

@@ -6,6 +6,9 @@ module Rails
       # This cop checks whether constant value isn't relative date.
       # Because the relative date will be evaluated only once.
       #
+      # @safety
+      #   This cop's autocorrection is unsafe because its dependence on the constant is not corrected.
+      #
       # @example
       #   # bad
       #   class SomeClass