Auto merge of #136158 - cuviper:stable-next, r=cuviper

[stable] Prepare Rust 1.84.1 point release

- [Fix ICE 132920 in duplicate-crate diagnostics.](https://github.com/rust-lang/rust/pull/133304/)
- [Fix errors for overlapping impls in incremental rebuilds.](https://github.com/rust-lang/rust/pull/133828/)
- [Fix slow compilation related to the next-generation trait solver.](https://github.com/rust-lang/rust/pull/135618/)
- [Fix debuginfo when LLVM's location discriminator value limit is exceeded.](https://github.com/rust-lang/rust/pull/135643/)
- Fixes for building Rust from source:
  - [Only try to distribute `llvm-objcopy` if llvm tools are enabled.](https://github.com/rust-lang/rust/pull/134240/)
  - [Add Profile Override for Non-Git Sources.](https://github.com/rust-lang/rust/pull/135433/)
  - [Resolve symlinks of LLVM tool binaries before copying them.](https://github.com/rust-lang/rust/pull/135585/)
  - [Make it possible to use ci-rustc on tarball sources.](https://github.com/rust-lang/rust/pull/135722/)

cc `@rust-lang/release`
r? ghost