message: fix: false positives in Model.isFromPdbArchive
  wrong for, e.g., AlphaFold DB entries
diff: @@ -283,8 +283,10 @@ export namespace Model {
  export function isFromPdbArchive(model: Model): boolean {
  if (!MmcifFormat.is(model.sourceData)) return false;
  const { db } = model.sourceData.data;
  + for (let i = 0, il = db.database_2.database_id.rowCount; i < il; ++i) {
  + if (db.database_2.database_id.value(i) === 'PDB') return true;
  + }
  return (
  - db.database_2.database_id.isDefined ||
  // 4 character PDB id
  model.entryId.match(/^[1-9][a-z0-9]{3,3}$/i) !== null ||
  // long PDB id
  