[release/7.0-rc1] Disable Int128 use in by value ABI scenarios, and fix field layout behavior - #74279

[release/7.0-rc1] Disable Int128 use in by value ABI scenarios, and fix field layout behavior#74279

jeffschwMSFT merged 11 commits into

release/7.0-rc1dotnet/runtime:release/7.0-rc1from

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