Do not launch floating window when on default launcher

We only do this when user is on the default launcher
because if the user was on a non-default launcher,
he/she must have been there for some purpose and we
do not want to throw him/her back to the default
launcher incase he/she exits the app with HOME button.

AICPfy

Change-Id: Ieccd82e6dadf0cc7a42a879c987ee2b4c8ff6a4e