File Loop menu item does not show ✔︎ when toggled on

**System and IINA version:**

- macOS 12.1
- IINA 1.2.0 build 129

**Expected behavior:**

When File Loop playback mode is enabled, the `File Loop` menu item should have a ✔︎ to show that it is `on` -- just like `Playlist Loop` menu item.

**Actual behavior:**
No ✔︎ ever appears.
