Runtime backend: unused heaps are never freed, "leaking" memory

[kikaxa]

This growth is bounded but is bad in some (not really rare) cases.
Estimates are up to 200GB for 4k screens.

Reproducible test case:
user resizing viewport with mouse, each frame being 1 pixel bigger.
going from half res->full res would have around 2000 heaps created, with up to 100mb per frame extra mem. only one of these is used at any given time

[ChemistAion]

Follow this specific subject on RPS-disco in bug-report section:
https://discord.com/channels/1090914939255926826/1210243206462050335/1210243206462050335

[ChemistAion]

@kikaxa ...some more "ideas" - check disco