Fix PInvoke transition frame in CPAOT (dotnet/coreclr#26706)

Fix PInvoke transition frame in CPAOT (dotnet/coreclr#26706)

During investigation of Linux CPAOT failures Jan Vorlicek discovered
that we were using the wrong constant for the PInvoke transition
frame. I have verified that the change fixes all tests under
JIT\methodical\explicit\basic I was previously seeing; I am running
the complete Pridotnet/coreclr#1 test suite to get an overall picture.

Thanks

Tomas

Commit migrated from https://github.com/dotnet/coreclr/commit/e4f35bf59cd2a96e00232ce7e004ec33d8317183