Add spec for aliased EE GraphQL mutation

ee/spec/graphql/types/mutation_type_spec.rb

@@ -24,6 +24,7 @@ RSpec.describe GitlabSchema.types['Mutation'] do
 
     where(:alias_name, :canonical_name) do
       'DismissVulnerability' | 'VulnerabilityDismiss'
+      'RevertVulnerabilityToDetected' | 'VulnerabilityRevertToDetected'
     end
 
     with_them do