fix: #7490 once again

src/posts/uploads.js

@@ -58,12 +58,12 @@ module.exports = function (Posts) {
 
 	Posts.uploads.listWithSizes = async function (pid) {
 		const paths = await Posts.async.uploads.list(pid);
-		const sizes = await db.async.getObjects(paths.map(path => 'upload:' + md5(path))) || {};
+		const sizes = await db.async.getObjects(paths.map(path => 'upload:' + md5(path))) || [];
 
-		return sizes.map((sizeObj, idx) => {
-			sizeObj.name = paths[idx];
-			return sizeObj;
-		});
+		return sizes.map((sizeObj, idx) => ({
+			...sizeObj,
+			name: paths[idx],
+		}));
 	};
 
 	Posts.uploads.isOrphan = function (filePath, callback) {