message: fix(web): ensure truncated text is not repeated in insertions tooltip
  This is a port of which got lost during rust transition
diff: @@ -98,7 +98,7 @@ export function InsertedFragmentTruncated({ insertion, isAminoacid }: InsertedFr
  let ins = insertion
  let truncatedText: string | undefined
  if (ins.length > targetLength) {
  - ins = insertion.slice(0, targetLength).concat(TRUNCATED_TEXT)
  + ins = insertion.slice(0, targetLength)
  truncatedText = TRUNCATED_TEXT
  }
  return { ins, truncatedText }
  