fix(photon): guard inbound-task cancel against self-cancellation in disconnect()

Follow-up widening of the #73170 pattern: apply the same
asyncio.current_task() guard used for the health task (and now the
supervisor task in _stop_sidecar) to the inbound-task cancel path in
disconnect(), so an inbound task that triggers disconnect() cannot
cancel-and-await itself.

plugins/platforms/photon/adapter.py

@@ -637,14 +637,16 @@ class PhotonAdapter(BasePlatformAdapter):
                 except Exception:
                     pass
         if self._inbound_task is not None:
-            self._inbound_task.cancel()
-            try:
-                await self._inbound_task
-            except asyncio.CancelledError:
-                pass
-            except Exception:
-                pass
+            task = self._inbound_task
             self._inbound_task = None
+            task.cancel()
+            if task is not asyncio.current_task():
+                try:
+                    await task
+                except asyncio.CancelledError:
+                    pass
+                except Exception:
+                    pass
         # Cancel any pending U+FFFC placeholder tasks.
         for chat_key, (_, fffc_task) in list(self._pending_fffc.items()):
             if fffc_task and not fffc_task.done():