tmp: Add debug to retagger

Author: Ariouz

graalpython/com.oracle.graal.python.test/src/runner.py

@@ -1243,6 +1243,7 @@ def is_platform_excluded(self, key: str) -> bool:
     def get_keys_as_str(self) -> list[str]:
         keys = []
         for key in sorted(self.keys):
+            if "$" in key: print(f"[WARNING]: Invalid key with $ found in tag keys: {key}, {self.keys}, {self.excluded_keys}")
             keys.append(key if key not in self.excluded_keys else f"${key}")
         return keys