Support Ruby 2.7's numbered parameter for Lint/SafeNavigationChain

This PR supports Ruby 2.7's numbered parameter for `Lint/SafeNavigationChain`.

CHANGELOG.md

@@ -9,6 +9,7 @@
 * [#7783](https://github.com/rubocop-hq/rubocop/pull/7783): Support Ruby 2.7's numbered parameter for `Style/RedundantSort`. ([@koic][])
 * [#7795](https://github.com/rubocop-hq/rubocop/issues/7795): Make `Layout/EmptyLineAfterGuardClause` aware of case where `and` or `or` is used before keyword that break control (e.g. `and return`). ([@koic][])
 * [#7786](https://github.com/rubocop-hq/rubocop/pull/7786): Support Ruby 2.7's pattern match for `Layout/ElseAlignment` cop. ([@koic][])
+* [#7784](https://github.com/rubocop-hq/rubocop/pull/7784): Support Ruby 2.7's numbered parameter for `Lint/SafeNavigationChain`. ([@koic][])
 
 ### Bug fixes
 

lib/rubocop/cop/lint/safe_navigation_chain.rb

@@ -32,7 +32,7 @@ class SafeNavigationChain < Cop
         def_node_matcher :bad_method?, <<~PATTERN
           {
             (send $(csend ...) $_ ...)
-            (send $(block (csend ...) ...) $_ ...)
+            (send $({block numblock} (csend ...) ...) $_ ...)
           }
         PATTERN
 

spec/rubocop/cop/lint/safe_navigation_chain_spec.rb

@@ -89,6 +89,17 @@
     RUBY
   end
 
+  context '>= Ruby 2.7', :ruby27 do
+    it 'registers an offense for ordinary method chain exists after ' \
+       'safe navigation method call with a block using numbered parameter' do
+      expect_offense(<<~RUBY)
+        something
+        x&.select { foo(_1) }.bar
+                             ^^^^ Do not chain ordinary method call after safe navigation operator.
+      RUBY
+    end
+  end
+
   it 'registers an offense for safe navigation with < operator' do
     expect_offense(<<~RUBY)
       x&.foo < bar