Bug report

array_key_exists result seems to get cached when calling multiple times and treatPhpDocTypesAsCertain is false.

Code snippet that reproduces the problem

https://phpstan.org/r/b188b057-febf-4611-8d1b-2dec775d1892

Expected output

No errors