With this CL, the Launcher starts checking
config_imeDrawsImeNavBar [1]
instead of
config_navBarInteractionMode
when determining whether the IME should render the back and IME
switcher buttons or not.
There should be no observable behavior change as long as
config_navBarInteractionMode
is set to true when the gestural navigation is enabled.
Bug: 216118048
Test: presubmit
Change-Id: Ia8269e240e0b18e1c7b8bd550dbb197ad58a6dbc