Refactor code for improved readability and consistency

- Updated formatting in web-api.ts for better alignment and readability.
- Enhanced XML builders in xml.ts for clearer structure and maintainability.
- Improved test cases in s3-auth.test.ts and s3-operations.test.ts for better clarity and consistency.
- Refactored mock data in web-api.test.ts for improved readability.

src/db/files-ext.ts

@@ -111,10 +111,7 @@ export const softDeleteFile = async (bucketId: string, s3Key: string): Promise<b
   return result.rows.length > 0;
 };
 
-export const softDeleteFilesBatch = async (
-  bucketId: string,
-  keys: string[],
-): Promise<number> => {
+export const softDeleteFilesBatch = async (bucketId: string, keys: string[]): Promise<number> => {
   let deleted = 0;
   for (const key of keys) {
     const ok = await softDeleteFile(bucketId, key);