Offset 'id' on array('id' => string) in isset always exists should not be reported with treatPhpDocTypesAsCertain: false #5620
Description
Bug report
An array shape should not be trusted with treatPhpDocTypesAsCertain (and bleedingEdge)
Code snippet that reproduces the problem
https://phpstan.org/r/cc561270-32c6-478f-a613-475077f8aa80
Expected output
No errors
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