Camera: VTS: Adjust test to handle optional readoutTimestamp support

With readout timestamp support becomes optional in b/309543399, we
need to adjust the VTS test to handle it.

Test: vendor testing
Bug: 354875531
Change-Id: I552b223f7834df83b8c0bae9f23ab7393a42b64a
diff --git a/camera/provider/aidl/vts/device_cb.h b/camera/provider/aidl/vts/device_cb.h
index 3ae7d10..d839ab4 100644
--- a/camera/provider/aidl/vts/device_cb.h
+++ b/camera/provider/aidl/vts/device_cb.h
@@ -60,7 +60,7 @@
     bool processCaptureResultLocked(const CaptureResult& results,
                                     std::vector<PhysicalCameraMetadata> physicalCameraMetadata);
     ScopedAStatus notifyHelper(const std::vector<NotifyMsg>& msgs,
-                               const std::vector<std::pair<bool, nsecs_t>>& readoutTimestamps);
+                               const std::vector<nsecs_t>& readoutTimestamps);
 
     CameraAidlTest* mParent;  // Parent object