Allowing the widgetBottomSheet to be dragged

even when the touch is started from outside the panel

Removing various instanceOf checks in onNewIntent and onBackPress
and moving all the corresponding logging in the FloatingView
This simplifies handling of panel specific log and avoids
missing a particular panel type in the if-else statement.

Bug: 64751884
Bug: 64751923
Change-Id: I98f5aae18560a64be73c9efcf495479740d49a00