Enable the sort-keys eslint rule (#1746)

## Description:

Enable the `sort-keys` eslint rule.

Fixes #1629

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [ ] I have read and accepted the CLA agreement (only required once).

src/core/game/FetchGameMapLoader.ts

@@ -27,10 +27,10 @@ export class FetchGameMapLoader implements GameMapLoader {
     }
 
     const mapData = {
+      manifest: () => this.loadJsonFromUrl(this.url(fileName, "manifest.json")),
       mapBin: () => this.loadBinaryFromUrl(this.url(fileName, "map.bin")),
       miniMapBin: () =>
         this.loadBinaryFromUrl(this.url(fileName, "mini_map.bin")),
-      manifest: () => this.loadJsonFromUrl(this.url(fileName, "manifest.json")),
       webpPath: async () => this.url(fileName, "thumbnail.webp"),
     } satisfies MapData;