Hotfix from SPB: always nd.array the mask (can be VECTOR_BOOL)

src/calng/ShmemTrainMatcher.py

@@ -469,9 +469,11 @@ class ShmemTrainMatcher(TrainMatcher.TrainMatcher):
         new_sources_map = {}
         frame_selection_mask = None
         if self._frame_selection_enabled and self._frame_selection_arbiter in sources:
-            frame_selection_mask = sources[self._frame_selection_arbiter][0][
-                "data.dataFramePattern"
-            ].astype(np.bool, copy=False)
+            frame_selection_mask = np.array(
+                sources[self._frame_selection_arbiter][0][
+                    "data.dataFramePattern"
+                ], copy=False
+            ).astype(np.bool, copy=False),
 
         if self._thread_pool is None:
             for source, (data, timestamp) in sources.items():