[llvm] Ensure NoTrapAfterNoreturn is false for the wasm backend (PR #65876)

[Heejin Ahn via llvm-commits]

aheejin wrote:

Thanks for the backgrounds. I think I understand better now.

I still think that if incompatible options are given, it would be better to either warn or error out than silently overriding it. (We should override it, but if the incompatible option is given explicitly in the command line we better warn/error). WDYT?

https://github.com/llvm/llvm-project/pull/65876