Better argument diagnostics in attributes

[jdonszelmann]

@rustbot blocked on both #146657 and #146652

[bors]

☔ The latest upstream changes (presumably #146666) made this pull request unmergeable. Please resolve the merge conflicts.

[bors]

☔ The latest upstream changes (presumably #146862) made this pull request unmergeable. Please resolve the merge conflicts.

[bors]

☔ The latest upstream changes (presumably #147019) made this pull request unmergeable. Please resolve the merge conflicts.

[rust-log-analyzer]

The job aarch64-gnu-llvm-20-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

   Compiling rustc_attr_parsing v0.0.0 (/checkout/compiler/rustc_attr_parsing)
error: unused import: `LimitInvalid`
 --> compiler/rustc_attr_parsing/src/attributes/crate_level.rs:2:61
  |
2 | use crate::session_diagnostics::{FeatureExpectedSingleWord, LimitInvalid};
  |                                                             ^^^^^^^^^^^^
  |
  = note: `-D unused-imports` implied by `-D warnings`
  = help: to override `-D warnings` add `#[allow(unused_imports)]`

[bors]

☔ The latest upstream changes (presumably #147345) made this pull request unmergeable. Please resolve the merge conflicts.