Ref: #810

Wasi target is almost done except some problems. They show up on different machines:

Machine of @hyf0

• Any std::fs::xxx call blocks the whole program and make the program hang.
• rayon could not work, so all par_xxc calls needs to be removed.
• Process hung instead exit successfully after bundling.

Machine of @Brooooooklyn

• Any std::fs::xxx call blocks the whole program and make the program hang.
  • Add an extra std::fs::xxx call in the beginning of the program solves the problem but doesn't works on @hyf0.
• Unknown segmentation fault.
• Process hung instead exit successfully after bundling.

Related refs:

• fix: canonicalize is not supported on wasi target oxc-project/oxc-resolver#124
• chore: improve some async usage #834
• chore: remove useless async-scoped #840
• chore(rolldown): use bounded channel to avoid dynamic memory allocation #872