Rollup merge of #139001 - folkertdev:naked-function-rustic-abi, r=traviscross,compiler-errors

add `naked_functions_rustic_abi` feature gate

tracking issue: https://github.com/rust-lang/rust/issues/138997

Because the details of the rust abi are unstable, and a naked function must match its stated ABI, this feature gate keeps naked functions with a rustic abi ("Rust", "rust-cold", "rust-call" and "rust-intrinsic") unstable.

r? ````@traviscross````

compiler/rustc_span/src/symbol.rs

@@ -1400,6 +1400,7 @@ symbols! {
         naked,
         naked_asm,
         naked_functions,
+        naked_functions_rustic_abi,
         naked_functions_target_feature,
         name,
         names,