feat: enhance TableManagementPage and ExcelUploadModal for improved functionality

- Added handling for unique and nullable column toggles in TableManagementPage, allowing for better column configuration.
- Updated ExcelUploadModal to include depth and ancestors in valid options for category values, enhancing the categorization process.
- Improved user feedback in ExcelUploadModal by clarifying success messages and ensuring proper handling of duplicate actions.
- Refactored category value flattening logic to maintain depth and ancestor information, improving data structure for better usability.

These enhancements aim to provide users with a more flexible and intuitive experience when managing table configurations and uploading Excel data.

frontend/app/(main)/admin/systemMng/tableMngList/page.tsx

@@ -1586,6 +1586,20 @@ export default function TableManagementPage() {
                     selectedColumn={selectedColumn}
                     onSelectColumn={setSelectedColumn}
                     onColumnChange={(columnName, field, value) => {
+                      if (field === "isUnique") {
+                        const currentColumn = columns.find((c) => c.columnName === columnName);
+                        if (currentColumn) {
+                          handleUniqueToggle(columnName, currentColumn.isUnique || "NO");
+                        }
+                        return;
+                      }
+                      if (field === "isNullable") {
+                        const currentColumn = columns.find((c) => c.columnName === columnName);
+                        if (currentColumn) {
+                          handleNullableToggle(columnName, currentColumn.isNullable || "YES");
+                        }
+                        return;
+                      }
                       const idx = columns.findIndex((c) => c.columnName === columnName);
                       if (idx >= 0) handleColumnChange(idx, field, value);
                     }}