Rollup merge of #97009 - fortanix:raoul/unused_macro_sgx, r=thomcc

Allow `unused_macro_rules` in path tests

PR #96150 adds a new lint to warn about unused macro rules (arms/matchers). This causes errors in `library/std/src/path/tests.rs` on the `x86_64-fortanix-unknown-sgx` platform. This PR fixes compilation errors on that platform by allowing unused macro rules.

library/std/src/path/tests.rs

@@ -7,6 +7,7 @@ use crate::rc::Rc;
 use crate::sync::Arc;
 use core::hint::black_box;
 
+#[allow(unknown_lints, unused_macro_rules)]
 macro_rules! t (
     ($path:expr, iter: $iter:expr) => (
         {