[Python] Use to_exception() to convert PyChipError to ChipStackError

Author: agners

src/controller/python/chip/clusters/Attribute.py

@@ -651,7 +651,7 @@ def __init__(self, future: Future, eventLoop, devCtrl, returnClusterObject: bool
         self._changedPathSet = set()
         self._pReadClient = None
         self._pReadCallback = None
-        self._resultError = None
+        self._resultError: PyChipError | None = None
 
     def SetClientObjPointers(self, pReadClient, pReadCallback):
         self._pReadClient = pReadClient
@@ -781,7 +781,7 @@ def _handleDone(self):
                 if self._subscription_handler:
                     self._subscription_handler.OnErrorCb(self._resultError, self._subscription_handler)
                 else:
-                    self._future.set_exception(chip.exceptions.ChipStackError(self._resultError))
+                    self._future.set_exception(self._resultError.to_exception())
             else:
                 self._future.set_result(AsyncReadTransaction.ReadResponse(
                     attributes=self._cache.attributeCache, events=self._events, tlvAttributes=self._cache.attributeTLVCache))
@@ -809,7 +809,7 @@ def __init__(self, future: Future, eventLoop):
         self._event_loop = eventLoop
         self._future = future
         self._resultData = []
-        self._resultError = None
+        self._resultError: PyChipError | None = None
 
     def handleResponse(self, path: AttributePath, status: int):
         try: