fix re-emitting to wrong module

Author: reaganjlee

src/_pytest/recwarn.py

@@ -5,6 +5,7 @@
 
 from pprint import pformat
 import re
+import sys
 from types import TracebackType
 from typing import Any
 from typing import Callable
@@ -327,12 +328,17 @@ def found_str() -> str:
             # Whether or not any warnings matched, we want to re-emit all unmatched warnings.
             for w in self:
                 if not self.matches(w):
+                    module = next(
+                        k
+                        for k, v in sys.modules.items()
+                        if getattr(v, "__file__", None) == w.filename
+                    )
                     warnings.warn_explicit(
                         message=w.message,
                         category=w.category,
                         filename=w.filename,
                         lineno=w.lineno,
-                        module=w.__module__,
+                        module=module,
                         source=w.source,
                     )