[MSVCRT] Add asm wrapper around RtlUnwind for Wine code

This is needed, because Wine code expects RtlUnwind to restore the non-volatile registers, before returning, but ours / the native one doesn't

[MSVCRT] Add asm wrapper around RtlUnwind for Wine code

This is needed, because Wine code expects RtlUnwind to restore the non-volatile registers, before returning, but ours / the native one doesn't do that.
Should fix CORE-19392 and CORE-19397

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