Cherrypick #39597 into v1.4.2-branch (#39766)

* Convert and log complex exceptions as simple Exception with stacktrace in on_fail (#39597)

* Simplify exception on_fail

* Improve code comment

* restyled

* Convert complex exceptions to simple Exception

* Restyled

* Added missing import traceback

* Restyled

* Undo changes in matter_testing.py and add __reduce__ in chip.exceptions at __init__.py

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Co-authored-by: Andrei Litvin <[email protected]>

* Code review

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Co-authored-by: Andrei Litvin <[email protected]>

Author: rquidute

src/controller/python/chip/exceptions/__init__.py

@@ -35,7 +35,19 @@
 
 
 class ChipStackException(Exception):
-    pass
+    def __reduce__(self):
+        """
+        Allows this exception to be pickled by returning a simplified Exception
+        with the same message, ensuring it can be safely transferred across
+        processes in multiprocessing environments.
+
+        Note:
+        This replaces the custom exception with a plain Exception during
+        pickling, preserving the message but not the exception type, to avoid
+        import errors in environments where this exception class is unavailable.
+        """
+
+        return (Exception, (str(self),))
 
 
 class ChipStackError(ChipStackException):