Auto merge of #143556 - jhpratt:rollup-nid39y2, r=jhpratt

Rollup of 9 pull requests

Successful merges:

 - rust-lang/rust#143206 (Align attr fixes)
 - rust-lang/rust#143236 (Stabilize `mixed_integer_ops_unsigned_sub`)
 - rust-lang/rust#143344 (Port `#[path]` to the new attribute parsing infrastructure )
 - rust-lang/rust#143359 (Link to 2024 edition page for `!` fallback changes)
 - rust-lang/rust#143456 (mbe: Change `unused_macro_rules` to a `DenseBitSet`)
 - rust-lang/rust#143529 (Renamed retain_mut to retain on LinkedList as mentioned in the ACP)
 - rust-lang/rust#143535 (Remove duplicate word)
 - rust-lang/rust#143544 (compiler: rename BareFn to FnPtr)
 - rust-lang/rust#143552 (lib: more eagerly return `self.len()` from `ceil_char_boundary`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors