Add filters for project held and impulse sequences in App.tsx

src/app/App.tsx

@@ -1909,6 +1909,12 @@ export function App({ store, initialStatusMessage }: AppProps) {
   const projectSequenceList = getProjectSequences(
     editorState.projectDocument.sequences
   );
+  const projectHeldSequenceList = projectSequenceList.filter(
+    (sequence) => getProjectSequenceHeldSteps(sequence).length > 0
+  );
+  const projectImpulseSequenceList = projectSequenceList.filter(
+    (sequence) => getProjectSequenceImpulseSteps(sequence).length > 0
+  );
   const selectedInteractionSource = isInteractionSourceEntity(selectedEntity)
     ? selectedEntity
     : null;