boost-json: Failed to unpack the corpus

[tyler92]

After adding a new fuzz target, an error appears in the coverage build:

Step #5: [/corpus/fuzz_direct_parse.zip]
Step #5:   End-of-central-directory signature not found.  Either this file is not
Step #5:   a zipfile, or it constitutes one disk of a multi-part archive.  In the
Step #5:   latter case the central directory and zipfile comment will be found on
Step #5:   the last disk(s) of this archive.
Step #5: unzip:  cannot find zipfile directory in one of /corpus/fuzz_direct_parse.zip or
Step #5:         /corpus/fuzz_direct_parse.zip.zip, and cannot find /corpus/fuzz_direct_parse.zip.ZIP, period.
Step #5: Failed to unpack the corpus for fuzz_direct_parse. This usually means that corpus backup for a particular fuzz target does not exist. If a fuzz target was added in the last 24 hours, please wait one more day. Otherwise, something is wrong with the fuzz target or the infrastructure, and corpus pruning task does not finish successfully.

The error has persisted for several consecutive days.
https://oss-fuzz-build-logs.storage.googleapis.com/log-953a014e-8a20-46fe-af57-19416d09cff7.txt

Similar to: #12357