message: check if atomistic before query modified
diff: @@ -132,6 +132,7 @@ const ligandPlusConnected = MS.struct.modifier.union([
  const modified = MS.struct.modifier.union([
  MS.struct.generator.atomGroups({
  + 'chain-test': MS.core.rel.eq([MS.ammp('objectPrimitive'), 'atomistic']),
  'residue-test': MS.ammp('isModified')
  })
  ])
  