refactor: Update references from table_column_category_values to category_values

- Changed all occurrences of `table_column_category_values` to `category_values` in the backend services and controllers to standardize the terminology.
- Updated SQL queries to reflect the new table name, ensuring proper data retrieval and management.
- Adjusted comments and documentation to clarify the purpose of the `category_values` table in the context of category management.

These changes enhance code clarity and maintain consistency across the application.

backend-node/src/services/tableManagementService.ts

@@ -3505,7 +3505,7 @@ export class TableManagementService {
       const referenceTableColumns = new Map<string, string[]>();
       const uniqueRefTables = new Set(
         joinConfigs
-          .filter((c) => c.referenceTable !== "table_column_category_values") // 카테고리는 제외
+          .filter((c) => c.referenceTable !== "category_values") // 카테고리는 제외
           .map((c) => `${c.referenceTable}:${c.sourceColumn}`)
       );
 
@@ -4310,8 +4310,8 @@ export class TableManagementService {
     ];
 
     for (const config of joinConfigs) {
-      // table_column_category_values는 특수 조인 조건이 필요하므로 항상 DB 조인
-      if (config.referenceTable === "table_column_category_values") {
+      // category_values는 특수 조인 조건이 필요하므로 항상 DB 조인
+      if (config.referenceTable === "category_values") {
         dbJoins.push(config);
         console.log(`🔗 DB 조인 (특수 조건): ${config.referenceTable}`);
         continue;