Fix console command 'tables clean' (#13916)

NullPointerException was thrown because index table was not provided

Fixes #13911

Signed-off-by: Jacob Laursen <jacob-github@vindvejr.dk>

bundles/org.openhab.persistence.jdbc/src/main/java/org/openhab/persistence/jdbc/internal/JdbcPersistenceService.java

@@ -525,6 +525,7 @@ public class JdbcPersistenceService extends JdbcMapper implements ModifiablePers
                 if (!conf.getTableUseRealCaseSensitiveItemNames()) {
                     ItemsVO itemsVo = new ItemsVO();
                     itemsVo.setItemName(entry.getItemName());
+                    itemsVo.setItemsManageTable(conf.getItemsManageTable());
                     deleteItemsEntry(itemsVo);
                 }
                 itemNameToTableNameMap.remove(entry.getItemName());