Delete StructLayoutAttribute.Pack adjustment

[jkotas]

This adjustment was trying to minic adjustment performed by type loader, but the logic has been out-of-sync with the type loader evolution for years.
It does not make sense for custom attribute reading via reflection to perform this adjustment.

Fixes #12480

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Issue Details

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This adjustment was trying to minic adjustment performed by type loader, but the logic has been out-of-sync with the type loader evolution for years.
It does not make sense for custom attribute reading via reflection to perform this adjustment.

Fixes #12480

Author:	jkotas
Assignees:	-
Labels:	area-System.Reflection
Milestone:	-

[am11]

The nativeaot failure (seems unrelated but) is interesting one:

C:\h\w\A86E08E3\w\B33F0964\e>System.Runtime.Tests.exe -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing
Process terminated. Access Violation: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. The application will be terminated since this platform does not support throwing an AccessViolationException.

should it run category=OuterLoop test with standard PR run?

[jkotas]

The nativeaot failure (seems unrelated but) is interesting one:

This looks similar to #64060. We need to get crash dumps to root cause it. I believe @MichalStrehovsky has been working towards it.

[MichalStrehovsky]

should it run category=OuterLoop test with standard PR run?

That's fine, the test runner in use for single file and NativeAOT testing ignores all command line arguments :).

This looks similar to #64060. We need to get crash dumps to root cause it. I believe @MichalStrehovsky has been working towards it.

I thought running this test as a Helix workitem would already collect the dump. I'll need to find where...