Switch to using `wkg` for most WIT vendoring (#12327)

* feat(p3)!: vendor 0.3.0-rc-2026-01-06

Update wasmtime's WASI implementation from version
0.3.0-rc-2025-09-16 to 0.3.0-rc-2026-01-06, using wk

Switch to using `wkg` for most WIT vendoring (#12327)

* feat(p3)!: vendor 0.3.0-rc-2026-01-06

Update wasmtime's WASI implementation from version
0.3.0-rc-2025-09-16 to 0.3.0-rc-2026-01-06, using wkg for WIT vendoring.

This involves API changes in clocks and HTTP.

* ci: install wkg in monolith_checks

* Revert back to original WIT versions

Also refactor the script a bit to avoid too bash-isms and hopefully make
it a bit more straightforward what's happening.

---------

Co-authored-by: Bailey Hayes <[email protected]>

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Update to WASI 0.2.6. (#11049)

* Update to WASI 0.2.6.

This includes two changes:

# https://github.com/WebAssembly/wasi-filesystem/pull/165
Documentation update

# https://github.com/WebAssembly/w

Update to WASI 0.2.6. (#11049)

* Update to WASI 0.2.6.

This includes two changes:

# https://github.com/WebAssembly/wasi-filesystem/pull/165
Documentation update

# https://github.com/WebAssembly/wasi-http/pull/139
Adds a new unstable `send-informational` function to the `response-outparam` resource. I've left this `unimplemented!()`.

* Trap instead of panic

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