`--fullscreen` doesn't launch games in fullscreen mode on MacOS.

**Describe the bug** On MacOS, passing the `--fullscreen` command line argument does not correctly launch the game in fullscreen mode. **To Reproduce** Run either ``` open /Applications/ares.app --args --fullscreen [rom path] ``` or ``` /Applications/ares.app/Contents/MacOS/ares --fullscreen [rom path] ``` **Expected behavior** The game launches in full screen mode with the game centered and making maximal use of the available screen real estate. Basically I expect to get to the same state I'm in when hitting the 'Toggle Native Fullscreen' hotkey. **Actual behavior** * If `NativeFullScreen` is false, the game launches in a small borderless window centered in the middle of the screen. * If `NativeFullScreen` is true, the game launches in true fullscreen mode (black screen) but the content is not scaled up and is in the upper left corner of the screen. In either case, I can get to the desired state by hitting the Native FullScreen toggle key a couple of times. But it would be nice if that weren't necessary. **Additional context** I'm running ares v147 on MacOS 15.7.4. I've been doing this mainly with SNES games but it seems to apply to all types. Thanks very much for building ares. It's really an awesome piece of software.