Fix a false positive for Lint/RedundantSafeNavigation

Follow up #1014.

This commit fixes a false positive for `Lint/RedundantSafeNavigation`
when using `blank?`:

```ruby
nil.presence || 42  # => 42
nil&.presence || 42 # => 42

nil.present? || 42  # => 42
nil&.present? || 42 # => 42

nil.blank? || 42    # => true
nil&.blank? || 4    2# => 42
```

Author: koic

changelog/change_make_lint_redundant_safe_navigation_aware_of_several_methods.md

@@ -1 +1 @@
-* [#1014](https://github.com/rubocop/rubocop-rails/pull/1014): Make `Lint/RedundantSafeNavigation` aware of `blank?`, `presence`, and `present?` methods. ([@koic][])
+* [#1014](https://github.com/rubocop/rubocop-rails/pull/1014): Make `Lint/RedundantSafeNavigation` aware of `presence` and `present?` methods. ([@koic][])

config/default.yml

@@ -49,7 +49,7 @@ Lint/NumberConversion:
   AllowedPatterns: []
 
 Lint/RedundantSafeNavigation:
-  # Add `blank?`, `presence`, and `present?` methods to the default of the RuboCop core.
+  # Add `presence` and `present?` methods to the default of the RuboCop core.
   # https://github.com/rubocop/rubocop/blob/v1.51.0/config/default.yml#L2148-L2159
   AllowedMethods:
     - instance_of?
@@ -58,7 +58,6 @@ Lint/RedundantSafeNavigation:
     - eql?
     - respond_to?
     - equal?
-    - blank?
     - presence
     - present?