Fresh doc build with `-Zrustdoc-depinfo` has no files in `static.files` directory

[weihanglo]

Problem

In a fresh cargo doc -Zrustdoc-depinfo build, the generated static files under target/doc/static.files are missing.

Steps

1. Find a Cargo package.
2. cargo clean --doc
3. cargo +nightly doc --no-deps -Zrustdoc-depinfo --open

Possible Solution(s)

No response

Notes

Originally reported by @Jondolf in #15203 (comment).

cc #15370

Version

cargo 1.89.0-nightly (68db37499 2025-05-22)
release: 1.89.0-nightly
commit-hash: 68db37499f2de8acef704c73d9031be6fbcbaee4
commit-date: 2025-05-22

[weihanglo]

https://github.com/rust-lang/rust/blob/80c34983c63968c204096e79b9126c0039790741/src/librustdoc/html/render/write_shared.rs?plain=1#L206-L213

Need to pass toolchain-shared-resources along with other emit types.