fix: Bump runtime dependencies and upgrade ESLint to v10 (#9834)

- electron: 41.0.2 → 41.2.0
- eslint: ^9.39.2 → ^10.2.0
- axios: ^1.13.5 → ^1.15.0
- electron-context-menu: ^4.1.0 → ^4.1.2
- Added @eslint/js and globals as explicit devDependencies (required by ESLint 10)
- Fixed no-useless-assignment lint errors in downloader.js and misc.js