Auto merge of #156290 - JonathanBrouwer:rollup-PNM9rEm, r=JonathanBrouwer

Rollup of 6 pull requests

Successful merges:

 - rust-lang/rust#156061 (Support `-Cpanic=unwind` on WASI targets)
 - rust-lang/rust#151753 (Experiment: Reborrow traits)
 - rust-lang/rust#156280 (Add regression test for closure return ICE)
 - rust-lang/rust#152487 (core: drop unmapped ZSTs in array `map`)
 - rust-lang/rust#153759 (Add a suite of ChunkedBitSet union/subtract/intersect test scenarios)
 - rust-lang/rust#156198 (Add `sync` option to `-Z threads` to force synchronization on one thread)