[NFC][Clang] Don't check hardcode op num (#135375)

The num will change for any downstream customization.
diff --git a/clang/test/Modules/no-external-type-id.cppm b/clang/test/Modules/no-external-type-id.cppm
index d067e57..2c05769 100644
--- a/clang/test/Modules/no-external-type-id.cppm
+++ b/clang/test/Modules/no-external-type-id.cppm
@@ -23,7 +23,7 @@
 import a;
 export int b();
 
-// CHECK: <DECL_FUNCTION {{.*}} op8=4120
+// CHECK: <DECL_FUNCTION {{.*}} op8=[[#]]
 // CHECK: <TYPE_FUNCTION_PROTO
 
 //--- a.v1.cppm