Adding support for `IS JSON` & `IS NOT JSON`#2256

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LucaCappelletti94 wants to merge 2 commits intoapache:mainfrom

LucaCappelletti94:postgres-regression-12

Commits on Feb 27, 2026

feat(parser): add IS [NOT] JSON predicate support
LucaCappelletti94
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test(parser): expand IS JSON coverage across dialect and error paths
LucaCappelletti94
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