Upgrade to swc v33 (#81750)
So what do we need to do about https://github.com/swc-project/swc/pull/10813?
Not sure when we'd call `global_atom_store_gc()`
https://vercel.slack.com/archives/C03EWR7LGEN/p1752228740427529
The 2s-debounced gc calls didn't have a measurable effect on `next build --turbo`:
```
with gc:
360.90s user 80.74s system 688% cpu 1:04.15 total
357.24s user 82.61s system 664% cpu 1:06.23 total
without gc:
360.51s user 80.48s system 698% cpu 1:03.16 total
355.21s user 79.99s system 667% cpu 1:05.18 total
```
- [x] ~~Blocked on https://github.com/swc-project/swc/pull/10878~~
- [ ] https://github.com/swc-project/swc/issues/10930
Closes https://github.com/vercel/next.js/issues/81898
