Log, don't err, on unified delta WAL write failure #20057
Merged
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When the PBPWF fails on the Active node of a PR Secondary cluster with a read-only failure, there is no value in forwarding this request up to the Active node of the PR Primary cluster: it does not have the local revocation context necessary to write a Delta WAL entry for this request, and would likely end up writing a cross-cluster revocation entry (if it is enabled) or else erring completely.
Instead, log this error like we do when failing to write unified CRL entries. Switch both to using Error instead of Debug for this type of failure.