[llvmonly] Emit stubs for methods which failed compilation. (#32162)

[llvmonly] Emit stubs for methods which failed compilation. (#32162)

Emit a stub for methods which failed llvm compilation. Currently the stub will
throw a MissingMethodException, later it can fall back to the interpreter etc.
This is required for cross-assembly direct calls, since the caller doesn't
know that the callee has failed llvm compilation leading to missing
symbols during linking.

Co-authored-by: Zoltan Varga <vargaz@gmail.com>