message: scan all entities when looking for struct_conn etries
  solves PDB loading issue
diff: @@ -111,24 +111,28 @@ export namespace StructConn {
  symmetry: struct_conn.ptnr2_symmetry
  };
  + const entityIds = Array.from(model.entities.data.id.toArray());
  const _p = (row: number, ps: typeof p1) => {
  if (ps.label_asym_id.valueKind(row) !== Column.ValueKind.Present) return void 0;
  const asymId = ps.label_asym_id.value(row);
  - const entityIndex = model.atomicHierarchy.index.findEntity(asymId);
  - if (entityIndex < 0) return void 0;
  + const atomName = ps.label_atom_id.value(row);
  + // turns out "mismat" records might not have atom name value
  + if (!atomName) return undefined;
  +
  + const altId = ps.label_alt_id.value(row);
  + for (const eId of entityIds) {
  const residueIndex = model.atomicHierarchy.index.findResidue(
  - model.entities.data.id.value(entityIndex),
  + eId,
  asymId,
  ps.auth_seq_id.value(row),
  ps.ins_code.value(row)
  );
  - if (residueIndex < 0) return void 0;
  - const atomName = ps.label_atom_id.value(row);
  - // turns out "mismat" records might not have atom name value
  - if (!atomName) return void 0;
  - const atomIndex = model.atomicHierarchy.index.findAtomOnResidue(residueIndex, atomName, ps.label_alt_id.value(row));
  - if (atomIndex < 0) return void 0;
  + if (residueIndex < 0) continue;
  + const atomIndex = model.atomicHierarchy.index.findAtomOnResidue(residueIndex, atomName, altId);
  + if (atomIndex < 0) continue;
  return { residueIndex, atomIndex, symmetry: ps.symmetry.value(row) };
  + }
  + return void 0;
  };
  const entries: StructConn.Entry[] = [];
  