Apply fullscreen window mode if requested via activity options

If fullscreen is requested via activity options, apply fullscreen to
`outBounds` and return `RESULT_DONE` to prevent other modifiers from
changing mode.

Flag: com.android.window.flags.respect_fullscreen_activity_option_in_desktop_launch_params
Test: atest WmTests:DesktopModeLaunchParamsModifierTests
Fixes: 424336834
Change-Id: Id79d6f57907022e71636fee2f770ccded4a4683c