Auto merge of #135832 - Kobzol:rustdoc-lto, r=onur-ozkan

Apply LTO config to rustdoc

Before, the LTO configuration from `config.toml` was not applied to `rustdoc`. This provides a small perf. and binary size [win](https://github.com/rust-lang/rust/pull/112049#issuecomment-2605131041) for doc builds.

Since this is configured with Cargo profiles and not rustflags, it should not break tool build cache (https://github.com/rust-lang/rust/pull/131155). I tried to run `x test miri`, `x test rustdoc` and `x test miri` and nothing was rebuilt.

r? `@onur-ozkan`
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bors 2025-01-28 17:18:00 +00:00
commit 2eefbd017c

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