Allow to delete topics that are failing to recover #7131
Merged
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Motivation
If a topic is failing to recover, it's currently practically impossible to force the deletion, other than going to delete the metadata from ZK directly.
The failure to recover can happen when data for the last ledger is missing and the ledger fails causing the topic to be offline. This could be due to manual error (eg: increasing and decreasing the bookie replicas without waiting to auto-recovery).
If we want to delete a topic and move on, we shouldn't fail if the data itself is corrupted/missing.