message: ui, print length of sequences that are too long
diff: @@ -51,7 +51,9 @@ function getSequenceWrapper(state: SequenceViewState, structureSelection: Struct
  // check if entity sequence is available
  if (!entitySeq) return 'No sequence available'
  // check if sequence is too long
  - if (entitySeq.sequence.length > MaxDisplaySequenceLength) return 'Sequence too long'
  + if (entitySeq.sequence.length > MaxDisplaySequenceLength) {
  + return `Sequence too long (${entitySeq.sequence.length} residues)`
  + }
  }
  const Wrapper = unit.polymerElements.length ? PolymerSequenceWrapper : HeteroSequenceWrapper
  