Alternative observations: drop '(Matched)' hint from PDB ID header

frontend/src/components/datasets/protein/DataTable.tsx

@@ -82,7 +82,7 @@ export const DataTable: React.FC<DataTableProps> = ({ data, loading, total, filt
           <thead>
             <tr>
               <th onClick={() => handleSort('pdb_id_b')}>
-                PDB ID <span className="table-hint">(Matched)</span> {getSortIcon('pdb_id_b')}
+                PDB ID {getSortIcon('pdb_id_b')}
               </th>
               <th onClick={() => handleSort('auth_asym_id_b')}>
                 Chain ID {getSortIcon('auth_asym_id_b')}