Enable Rubocop RSpec/ExpectActual (#23720)

.rubocop_todo.yml

@@ -821,12 +821,6 @@ RSpec/EmptyExampleGroup:
 RSpec/ExampleLength:
   Max: 22
 
-# Offense count: 1
-# This cop supports safe autocorrection (--autocorrect).
-RSpec/ExpectActual:
-  Exclude:
-    - 'spec/controllers/well_known/nodeinfo_controller_spec.rb'
-
 # Offense count: 21
 # This cop supports unsafe autocorrection (--autocorrect-all).
 # Configuration parameters: EnforcedStyle.

spec/controllers/well_known/nodeinfo_controller_spec.rb

@@ -26,8 +26,9 @@ describe WellKnown::NodeInfoController, type: :controller do
       expect(response.media_type).to eq 'application/json'
 
       json = body_as_json
+      foo = { 'foo' => 0 }
 
-      expect({ 'foo' => 0 }).to_not match_json_schema('nodeinfo_2.0')
+      expect(foo).to_not match_json_schema('nodeinfo_2.0')
       expect(json).to match_json_schema('nodeinfo_2.0')
       expect(json[:version]).to eq '2.0'
       expect(json[:usage]).to be_a Hash