cockroachdb / cockroachdb/cockroach

DB-Level Changefeeds: Prevent GC on dropped but lagging tables

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A-cdc C-enhancement T-cdc
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Description

We mentioned a case where changefeed progress for a table is not current and that table gets dropped. We would still like to emit messages for updates that happened until the table got dropped. We should continue to protect this table. Handle this case gracefully.

Epic: [CRDB-1421](https://cockroachlabs.atlassian.net/browse/CRDB-1421)

Jira issue: CRDB-51243

Epic CRDB-1421

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