[NativeAOT] Size regression detected on NativeAOT apps

[matouskozak]

Detected range: fbe3d99...b367d98

cc: @simonrozsival

[jonathanpeppers]

This one is the first one with 0 trimmer warnings:

• 77706d7

So, I'd expect some amount of managed code is kept that wasn't before -- it's the first time we've been fully trimmer safe.

[simonrozsival]

The bump is much higher than I'd expect. We need to look into it in RC1 and RC2.