Cache started nonexistent property error checks to prevent reentrancy in the check #60683
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Fixes #60564
None of the expression types made while looking at the structure for this check are cached (courtesy of using
getRegularTypeOfExpression
instead ofcheckExpressionCached
inserializeTypeOfExpression
, which is itself done to handle freshness correctly), so the diagnostic check itself needs to be cached to prevent reentrancy when reporting on a circularly referential structure.