Ignore paths from expansion in unused_qualifications

compiler/rustc_resolve/src/late.rs

@@ -4636,7 +4636,9 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> {
     }
 
     fn lint_unused_qualifications(&mut self, path: &[Segment], ns: Namespace, finalize: Finalize) {
-        if path.iter().any(|seg| seg.ident.span.from_expansion()) {
+        if finalize.path_span.from_expansion()
+            || path.iter().any(|seg| seg.ident.span.from_expansion())
+        {
             return;
         }
 

tests/ui/lint/lint-qualification.fixed

@@ -33,6 +33,7 @@ fn main() {
         foo::bar();
         foo::$b(); // issue #96698
         $a::bar();
+        $a::$b();
     } }
     m!(foo, bar);
 }

tests/ui/lint/lint-qualification.rs

@@ -33,6 +33,7 @@ fn main() {
         foo::bar();
         foo::$b(); // issue #96698
         $a::bar();
+        $a::$b();
     } }
     m!(foo, bar);
 }