Unblocks conversation sessions that were banned by the Analyzer system.
This endpoint supports two modes of operation:

1. Unblock specific conversation sessions: Provide a list of conversation session IDs in the conversationSessionIds array
2. Unblock all conversation sessions: Set unblockAll to true to unblock all conversation sessions banned by Analyzer
   Note: Only one of these parameters should be provided. If both are provided, unblockAll takes precedence.