SOLR-17306: fix replication problem on follower restart #2874
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https://issues.apache.org/jira/browse/SOLR-17306
Same as #2873 -> but now against main branch
Description
If Leader has Replication disabled - do not delete Followers data on restart
Solution
Check if Leader Replication is enabled
Tests
Implemented Unit Tests, that check different restart scenarios. Enable Directory Storage for Replica, othwerwise tests will not work because memory is cleaned on restart
Checklist
Please review the following and check all that apply:
main
branch../gradlew check
.