Bulk Stop Snapshot Sources

Stop snapshot on multiple sources in parallel.

Automatically detects the running snapshot type (incremental or blocking) and uses the appropriate cancellation method:

• Incremental: Cancels via signal table, streaming continues
• Blocking: Restarts the connector, streaming resumes after restart

Uses lower concurrency to avoid overwhelming Kafka Connect.

Supports two modes for source selection:

1. Explicit IDs: Pass a list of source IDs
2. Select all: Set select_all=true with optional filters

Returns partial success results - continues processing even if individual stop operations fail.