On freeform displays where taskbar is always pinned, toggling "Always
show taskbar" option is no-op, as the taskbar won't transition to
transient taskbar.
Left a TODO to reevaluate behavior once desktop taskbar transient
behavior gets updated.
Bug: 390665752
Flag: com.android.window.flags.enable_desktop_taskbar_on_freeform_displays
Test: Manual.
Change-Id: Icfe7cd26e77de48ab34bfe4932bfedfe21923ef1
Toni Barzic
e5fc903495