Allow to continue after parse error

[nlohmann]

Address #3989

[coveralls]

coverage: 99.633% (-0.02%) from 99.649%
when pulling cd1e38d on issue3989
into 1b9a9d1 on develop.

[github-actions]

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[nlohmann]

Superseded by #5601. Instead of continuing after an error with the parser in an inconsistent state, it repairs the input (inserting missing separators, closing containers, replacing unreadable values with null), so the SAX events stay balanced and every key gets a value. The binary readers stop, but complete the value read so far.

This comment was written by Claude Code.