Auto merge of #116731 - Alexendoo:hash-untracked-state, r=oli-obk

Add `Config::hash_untracked_state` callback

For context, I'm looking to use [late module passes](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_lint/context/struct.LintStore.html#structfield.late_module_passes) in Clippy which unlike regular late passes run incrementally per module

However we have a config file which can change between runs, we need changes to that to invalidate the `lint_mod` query. This PR adds a side channel for us to hash some extra state into `Options` in order to do that

This does not make any changes to Clippy, I plan to do that in a PR to the Clippy repo along with some other required changes

An alternative implementation would be to add a new query to track this state and override the `lint_mod` query in Clippy to first call that

cc `@rust-lang/clippy`

compiler/rustc_driver_impl/src/lib.rs

@@ -312,6 +312,7 @@ fn run_compiler(
         locale_resources: DEFAULT_LOCALE_RESOURCES,
         lint_caps: Default::default(),
         parse_sess_created: None,
+        hash_untracked_state: None,
         register_lints: None,
         override_queries: None,
         make_codegen_backend,