Add forwards compatibility with new persistent subscription checkpoints #5244
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Added: Forwards compatibility with new persistent subscription checkpoints
24.10 writes Persistent Subscription Checkpoints prefixed with a $. 23.10.7 will not find these.
This PR makes it so that 23.10.8 will find them.
Prior to this PR, if 23.10 opened a database from 24.10, the checkpoint would not be found and the persistent subscription would start from the beginning, which could be slow.
(cherry picked from commit 6e21abb)