Build dependencies not added to the rendered BUILD.bazel

[bakjos]

When using build dependencies inside a Cargo.toml in a workspace, the rendered BUILD.bazel in crates_index does not include the build dependencies

I have the following build dependencies

[build-dependencies]
xmltree = "0.6"
phf_codegen = "0.7.24"

These 2 dependencies are not added to the resulting bazel file, generating the error no such target '@@crate_index//:phf_codegen-0.7.24': target 'phf_codegen-0.7.24' not declared in package

It was working well in 0.56.0 and started failing in 0.57.0

After debugging I realized the version 0.5.6 keeps the build_deps with full names "phf_codegen": Label("@crate_index__phf_codegen-0.7.24//:phf_codegen") however the new versions include them as "phf_codegen": Label("//:phf_codegen-0.7.24"), but the alias is not created in the main BUILD.bazel file. The change was introduced here 5e90483#diff-a165d4fcf7bc187750bb12572611029ff1522d224f1b4cc96483e6184e254c52