13403: Disable assertion rewriting for external modules - refactor

Author: Tusenka

src/_pytest/assertion/rewrite.py

@@ -222,9 +222,6 @@ def _early_rewrite_bailout(self, name: str, state: AssertionState) -> bool:
         if self._is_marked_for_rewrite(name, state):
             return False
 
-        if not path.is_relative_to(state.root_path):
-            return True
-
         state.trace(f"early skip of rewriting module: {name}")
         return True