[unix x86] Fix GCMemoryInfoData size assertion

[t-mustafin]

Fixes assertion on linux x86 after #58738:

Assert failure(PID 13816 [0x000035f8], Thread: 13816 [0x35f8]): Consistency check failed: Managed object size does not match unmanaged object size
man: 0x110, unman: 0x114, Name: System.GCMemoryInfoData
FAILED: size == expectedsize
    File: /home/tmustafin/dotnet/runtime/src/coreclr/vm/binder.cpp Line: 556
    Image: /home/tmustafin/dotnet/runtime/artifacts/bin/coreclr/Linux.x86.Checked/corerun

Aborted (core dumped)

cc @jkotas @MichalStrehovsky @gbalykov @alpencolt

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label.