`undocumented_unsafe_blocks` doesn't honour `#[allow(clippy::all)]`

Summary

I'm using the undocumented_unsafe_blocks lint in my Cargo.toml, but want to exclude a certain module from any lints, as it's auto generated by using #[allow(clippy::all)].

The lint still triggers.

P.S.: Thanks for your great presentation at Rustikon @llogiq, where I learned about this lint ❤ !

Lint Name

No response

Reproducer

I tried this code:

# Cargo.toml
[package]
name = "foo"
version = "0.1.0"
edition = "2021"

[dependencies]

[lints.clippy]
undocumented_unsafe_blocks = "deny"

// src/lib.rs
#![allow(clippy::all)]
pub fn add(left: u64, right: u64) -> u64 {
    unsafe { foo(left, right) }
}

unsafe fn foo(left: u64, right: u64) -> u64 {
    left + right
}

I saw this happen:

error: unsafe block missing a safety comment
 --> src/lib.rs:3:5
  |
3 |     unsafe { foo(left, right) }
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: consider adding a safety comment on the preceding line
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#undocumented_unsafe_blocks
  = note: requested on the command line with `-D clippy::undocumented-unsafe-blocks`

error: could not compile `foo` (lib) due to 1 previous error

I expected to see this happen:
With this diff, clippy ignores the lint as expected:

#![allow(clippy::all, clippy::undocumented_unsafe_blocks)]

Version

rustc 1.85.1 (4eb161250 2025-03-15)
binary: rustc
commit-hash: 4eb161250e340c8f48f66e2b929ef4a5bed7c181
commit-date: 2025-03-15
host: aarch64-apple-darwin
release: 1.85.1
LLVM version: 19.1.7

Additional Labels

No response

Reproduce the behavior using the Cargo.toml and src/lib.rs examples, then inspect the undocumented_unsafe_blocks lint and how clippy::all is applied. Done means the lint is suppressed by #[allow(clippy::all)] and the behavior is covered by a regression test.