Merge branch '55054-correlation-ids-being-passed-through-grpc-metadata-are-incorrect' into 'master'

Fix for incorrect Correlation-ID key being passed through GRPC metadata

Closes #55054

See merge request gitlab-org/gitlab-ce!23666

lib/gitlab/gitaly_client.rb

@@ -193,7 +193,7 @@ module Gitlab
       feature = feature_stack && feature_stack[0]
       metadata['call_site'] = feature.to_s if feature
       metadata['gitaly-servers'] = address_metadata(remote_storage) if remote_storage
-      metadata['correlation_id'] = Gitlab::CorrelationId.current_id if Gitlab::CorrelationId.current_id
+      metadata['x-gitlab-correlation-id'] = Gitlab::CorrelationId.current_id if Gitlab::CorrelationId.current_id
 
       metadata.merge!(server_feature_flags)