After restarting the Infinispan server, apparently, it is having issues resolving the proto that was manually added to ___protobuf_metadata.  By looking at the logs it seems that it fails to resolve the dependency to another proto file that it depends on, see: https://gist.github.com/cristianonicolai/29c7d796221e7897c2c3ba6b33e971bb#file-infinispan-log-L3040.
The proto file is this one: https://gist.github.com/cristianonicolai/dd41dd643ac410c2203e82fc0c48edd2
And its dependencies are here: https://github.com/kiegroup/kogito-apps/blob/main/data-index/data-index-storage/data-index-storage-protobuf/src/main/resources/META-INF/kogito-index.proto
When I list the schemas, it seems to have all files:

It all works fine firstly, the error only shows after restarting Infinispan.

This issue currently affects Kogito users as it can be reproduced in the Data Index service.