Bug report

After upgrading from PHPStan v2.1.30 to v2.1.31 we noticed a BIG increase in the memory usage of PHPStan.

(old version) v2.1.29

Elapsed time: 3 minutes 56 seconds
Used memory: 1.39 GB

v2.1.30

Elapsed time: 4 minutes 5 seconds
Used memory: 1.33 GB

with v2.1.31 I got two PHP processes spiking at 4.8G of RAM usage after the first 30 seconds

Code snippet that reproduces the problem

The repository with the codebase is a private project.
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Expected output

PHPStan should be able to terminate successfully without consuming all the available memory of the system :)

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