'Freeform windows on secondary diplay'.
Make sure the toggles enables freeform support on devices. This remove
reliance on 'Enable freeform windows suppport' toggle when using this
toggle.
Also update strings for all toggles to just use term 'freeform windows'
instead of 'desktop mode' or 'freeform windowing experiences'.
Two toggles have the same name 'enable freeform windows', but users will
see only one of them at a time.
Test: Added new tests
Bug: 348193756
Bug: 348186127
Flag: EXEMPT minor change
Change-Id: Ic4528618e6902d084c58a6b5ddeb4b92d63386d6
Default value of this dev options solely depends on
enable_desktop_windowing_mode, which is intended
Toggle is shown only if DW is eligible on device
Currently this option only overrides features guarded by
enable_desktop_windowing_mode, later on it will be used to override a
few other DW features
Test: Added tests. Locally tested CUJs
Bug: 348186127
Bug: 348193756
Flag: com.android.window.flags.show_desktop_windowing_dev_option
Change-Id: I1c1f946b586a5ca0440b29879925ba1a624717aa
