message: fix apply marker type error
diff: @@ -122,12 +122,11 @@ function applyMarkerAtomic(e: StructureElement.Loci.Element, action: MarkerActio
  const { index: residueIndex } = model.atomicHierarchy.residueAtomSegments;
  const { label_seq_id } = model.atomicHierarchy.residues;
  - let changed = false;
  OrderedSet.forEachSegment(e.indices, i => residueIndex[elements[i]], rI => {
  const seqId = label_seq_id.value(rI);
  - changed = applyMarkerActionAtPosition(markerArray, index(seqId), action) || changed;
  + applyMarkerActionAtPosition(markerArray, index(seqId), action);
  });
  - return changed;
  + return true;
  }
  function applyMarkerCoarse(e: StructureElement.Loci.Element, action: MarkerAction, markerArray: Uint8Array, index: (seqId: number) => number) {
  @@ -135,12 +134,11 @@ function applyMarkerCoarse(e: StructureElement.Loci.Element, action: MarkerActio
  const begin = Unit.isSpheres(e.unit) ? model.coarseHierarchy.spheres.seq_id_begin : model.coarseHierarchy.gaussians.seq_id_begin;
  const end = Unit.isSpheres(e.unit) ? model.coarseHierarchy.spheres.seq_id_end : model.coarseHierarchy.gaussians.seq_id_end;
  - let changed = false;
  OrderedSet.forEach(e.indices, i => {
  const eI = elements[i];
  for (let s = index(begin.value(eI)), e = index(end.value(eI)); s <= e; s++) {
  - changed = applyMarkerActionAtPosition(markerArray, s, action) || changed;
  + applyMarkerActionAtPosition(markerArray, s, action);
  }
  });
  - return changed;
  + return true;
  }
  \ No newline at end of file
  