enablesRenderGraphOptimization option hangs

[Karllas]

If you try to call makeCGImage for a MTIImage which consists of a large number of filters (30+) via MTIContext created with enablesRenderGraphOptimization option then makeCGImage never finishes.

Checklist

• I've read the README
• If possible, I've reproduced the issue using the master branch of this repo
• I've searched for existing GitHub issues

Environment

Info	Value
MetalPetal Version	1.25.2
Integration Method	SwiftPM
Platform & Version	iOS 17.0
Device	iPhone Pro Max 12 and 13

Steps to Reproduce

1. Create MTIContext with enablesRenderGraphOptimization option set to true
2. Apply a lot of filters (30+)
3. Call makeCGImage

Expected behavior

Image should be rendered

Actual behavior

Hang. Rendering never finishes