Refactor specs for file registry finders

This commit removes code duplicate between these specs

ee/spec/finders/geo/attachment_registry_finder_spec.rb

@@ -456,25 +456,5 @@ describe Geo::AttachmentRegistryFinder, :geo, :geo_fdw do
     end
   end
 
-  it 'responds to file registry finder methods' do
-    file_registry_finder_methods = %i{
-      syncable
-      count_syncable
-      count_synced
-      count_failed
-      count_synced_missing_on_primary
-      count_registry
-      find_unsynced
-      find_migrated_local
-      find_retryable_failed_registries
-      find_retryable_synced_missing_on_primary_registries
-    }
-
-    file_registry_finder_methods.each do |method|
-      expect(subject).to respond_to(method)
-    end
-  end
-
-  include_examples 'counts all the things'
-  include_examples 'finds all the things'
+  it_behaves_like 'a file registry finder'
 end

ee/spec/finders/geo/job_artifact_registry_finder_spec.rb

@@ -563,25 +563,5 @@ describe Geo::JobArtifactRegistryFinder, :geo_fdw do
     end
   end
 
-  it 'responds to file registry finder methods' do
-    file_registry_finder_methods = %i{
-      syncable
-      count_syncable
-      count_synced
-      count_failed
-      count_synced_missing_on_primary
-      count_registry
-      find_unsynced
-      find_migrated_local
-      find_retryable_failed_registries
-      find_retryable_synced_missing_on_primary_registries
-    }
-
-    file_registry_finder_methods.each do |method|
-      expect(subject).to respond_to(method)
-    end
-  end
-
-  include_examples 'counts all the things'
-  include_examples 'finds all the things'
+  it_behaves_like 'a file registry finder'
 end

ee/spec/finders/geo/lfs_object_registry_finder_spec.rb

@@ -642,25 +642,5 @@ describe Geo::LfsObjectRegistryFinder, :geo_fdw do
     end
   end
 
-  it 'responds to file registry finder methods' do
-    file_registry_finder_methods = %i{
-      syncable
-      count_syncable
-      count_synced
-      count_failed
-      count_synced_missing_on_primary
-      count_registry
-      find_unsynced
-      find_migrated_local
-      find_retryable_failed_registries
-      find_retryable_synced_missing_on_primary_registries
-    }
-
-    file_registry_finder_methods.each do |method|
-      expect(subject).to respond_to(method)
-    end
-  end
-
-  include_examples 'counts all the things'
-  include_examples 'finds all the things'
+  it_behaves_like 'a file registry finder'
 end

ee/spec/support/shared_examples/finders/file_registry_finders.rb

@@ -18,34 +18,6 @@ shared_examples_for 'a file registry finder' do
     end
   end
 
-  # Disable transactions via :delete method because a foreign table
-  # can't see changes inside a transaction of a different connection.
-  context 'FDW', :geo_fdw, :delete do
-    context 'with use_fdw_queries_for_selective_sync disabled' do
-      before do
-        stub_feature_flags(use_fdw_queries_for_selective_sync: false)
-      end
-
-      include_examples 'counts all the things'
-      include_examples 'finds all the things'
-    end
-
-    context 'with use_fdw_queries_for_selective_sync enabled' do
-      before do
-        stub_feature_flags(use_fdw_queries_for_selective_sync: true)
-      end
-
-      include_examples 'counts all the things'
-      include_examples 'finds all the things'
-    end
-  end
-
-  context 'Legacy' do
-    before do
-      stub_fdw_disabled
-    end
-
-    include_examples 'counts all the things'
-    include_examples 'finds all the things'
-  end
+  include_examples 'counts all the things'
+  include_examples 'finds all the things'
 end