classloader/StaticVirtualMethods/GenericContext/GenericContextTest takes very long under GC stress, times out on OSX-arm64

[VSadov]

Examples of timeout failures:

https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-103076-merge-7269229228744033b5/Loader.2.3/1/console.f932d39f.log?helixlogtype=result

https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-85694-merge-c093b64e9e7a4971aa/Loader.1.3/1/console.60c249dc.log?helixlogtype=result

https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-85694-merge-c093b64e9e7a4971aa/Loader.2.3/1/console.a7c2f169.log?helixlogtype=result

Since this is always on a different scenario, I think it is just the test takes too long on OSX-arm64 machines.
Possibly the machines are too slow and the test is too big.
(the test was mentioned before as very large and causing trouble due to size in other contexts - #92722)

If there is no something that is particularly interesting from GC stress perspective for this test, perhaps we should just do <GCStressIncompatible>true</GCStressIncompatible>

[VSadov]

This is blocking clean gcstress runs. I think this should be fixed in 9.0

[VSadov]

Should be fixed by #104686