Fix fallback for the multitag on rio pose strategy (#1755)

photon-lib/src/main/native/include/photon/PhotonPoseEstimator.h

@@ -204,6 +204,21 @@ class PhotonPoseEstimator {
 
   inline void InvalidatePoseCache() { poseCacheTimestamp = -1_s; }
 
+  /**
+   * Internal convenience method for using a fallback strategy for update().
+   * This should only be called after timestamp checks have been done by another
+   * update() overload.
+   *
+   * @param cameraResult The latest pipeline result from the camera
+   * @param strategy The pose strategy to use
+   * @return an EstimatedRobotPose with an estimated pose, timestamp, and
+   * targets used to create the estimate.
+   */
+  std::optional<EstimatedRobotPose> Update(const PhotonPipelineResult& result,
+                                           PoseStrategy strategy) {
+    return Update(result, std::nullopt, std::nullopt, strategy);
+  }
+
   std::optional<EstimatedRobotPose> Update(
       const PhotonPipelineResult& result,
       std::optional<PhotonCamera::CameraMatrix> cameraMatrixData,