refactor(bzlmod): remove bind of @icu

[alexeagle]

Per documentation: https://bazel.build/external/migration#bind-targets

[github-actions]

The generated output of @cloudflare/workers-types matches the snapshot in types/generated-snapshot 🎉

[alexeagle]

@fhanau I suppose the internal repo needs a similar change, wherever it is assuming //external:icu label points to this particular repo.

[fhanau]

@fhanau I suppose the internal repo needs a similar change, wherever it is assuming //external:icu label points to this particular repo.

The change here is fine – no internal changes are needed, but there's an internal CI issue (I'll merge this once that's resolved).