fix: Remove trailing commas causing tuple assignment in response cancellation

The trailing commas on lines 434 and 619 were creating tuples instead of booleans for automatic_response_cancellation_enabled. This caused the condition 'if not automatic_response_cancellation_enabled' to always evaluate to False, preventing _cancel_response() from being called.

Impact: Response cancellation was completely broken when interrupt_response=False
Fix: Remove trailing commas to return bool instead of tuple

Verification:
- Before fix: type=tuple, not (False,) = False -> _cancel_response() NOT called
- After fix: type=bool, not False = True -> _cancel_response() IS called
- All 23 tests pass

Author: gn00295120

src/agents/realtime/openai_realtime.py

@@ -431,7 +431,7 @@ async def _send_interrupt(self, event: RealtimeModelSendInterrupt) -> None:
             and session.audio is not None
             and session.audio.input is not None
             and session.audio.input.turn_detection is not None
-            and session.audio.input.turn_detection.interrupt_response is True,
+            and session.audio.input.turn_detection.interrupt_response is True
         )
         if not automatic_response_cancellation_enabled:
             await self._cancel_response()
@@ -616,7 +616,7 @@ async def _handle_ws_event(self, event: dict[str, Any]):
                     and session.audio is not None
                     and session.audio.input is not None
                     and session.audio.input.turn_detection is not None
-                    and session.audio.input.turn_detection.interrupt_response is True,
+                    and session.audio.input.turn_detection.interrupt_response is True
                 )
                 if not automatic_response_cancellation_enabled:
                     await self._cancel_response()