[core] Increase memory limit for size:snapshot #29005
Merged
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First commit is just for debugging. It revealed that something is leaking memory after each compilation and it's unclear what. Review with whitespace ignored.
This leak leads to #28923 failing
size:snapshot
. Though we can live with the leak for now since Azure Pipelines have 7GB of RAM so we can just increasemax-old-space-size
to 4GB (up from 2)