fix: fix BadStr badness

Author: snus-kin

tests/test_correlation.py

@@ -1,6 +1,6 @@
 """Tests for correlation ID generation."""
 
-from typing import final, override
+from typing import cast, override
 
 import pytest
 
@@ -49,19 +49,22 @@ def test_hash_correlation_provider_with_invalid_input() -> None:
     provider = HashCorrelationProvider()
 
     # Create an object that raises an exception when converted to string
-    @final
-    class BadStr(str):
-        __slots__ = ()
-
+    class BadStr:
         @override
         def __str__(self) -> str:
             error_msg = "Cannot convert to string"
             raise ValueError(error_msg)
 
+    string = BadStr()
+
+    # do bad stuff to get around type issues
+    string = cast("object", string)
+    string = cast("str", string)
+
     with pytest.raises(
         ValueError, match="Failed to generate correlation ID from input"
     ):
-        _ = provider.get_correlation_id(BadStr())
+        _ = provider.get_correlation_id(string)
 
 
 def test_hash_correlation_provider_consistency() -> None: