Breaking change in icu_provider 1.2.0

[Razican]

With the update from icu_provider 1.1.0 to 1.2.0, the pub use prelude::* has been removed:

https://docs.rs/icu_provider/1.1.0/src/icu_provider/lib.rs.html#199

This means that after a cargo update, we can no longer use the following syntax:

use icu_provider::{
    yoke::{trait_hack::YokeTraitHack, Yokeable},
    zerofrom::ZeroFrom,
};

This is a semver-incompatible change, unfortunately :(

[sffc]

Was noted in a review in #3324 (comment); the API in question was #[doc(hidden)] which we generally ignore for semver purposes, but if you broke on upgrading we should probably add it back, still as #[doc(hidden)]. I'm fine making a 1.2.1 release of that crate to add back those two APIs.

[Razican]

This is interesting. Maybe we should just be importing the crates directly? Since #[doc(hidden)] stuff is not considered for backwards compatibility, this could happen again in the future.

Also, even when using the prelude::* imports, we got some compile errors, which we have to re-check.

[Razican]

You can check here the build errors we're getting after importing yoke and zerofrom from the prelude sub-module: https://github.com/boa-dev/boa/actions/runs/4709275331/jobs/8352236237?pr=2826

[sffc]

Oof, it looks like we lost a + ?Sized in the LocaleCanonicalizer constructor

error[E0277]: the size for values of type `dyn BufferProvider` cannot be known at compilation time
   --> boa_engine/src/context/icu.rs:62:67
    |
62  |                 LocaleCanonicalizer::try_new_with_buffer_provider(&**buffer)
    |                 ------------------------------------------------- ^^^^^^^^^ doesn't have a size known at compile-time
    |                 |
    |                 required by a bound introduced by this call
    |
    = help: the trait `Sized` is not implemented for `dyn BufferProvider`
note: required by a bound in `LocaleCanonicalizer::try_new_with_buffer_provider`
   --> /Users/runner/.cargo/registry/src/github.jparrowsec.cn-1ecc6299db9ec823/icu_locid_transform-1.2.0/src/canonicalizer.rs:240:20

Since you guys have a lot of call sites, we should add "test with Boa" to our release checklist...

[Razican]

Regarding the exports of yoke and zerofrom, we have decided that we will directly import the dependencies in boa, so there is no need to revert that part.