Fix pixel buds icon is empty in output switcher

MediaDevice will set a color filter in the bluetooth device icon if
the bluetooth device is not a fist pair device. But if apps didn't
have permission to get a first pair device icon, MediaDevice will
return a default bluetooth icon. In this case MediaDevice will not
set the color filter in the icon then it causes the icon to become empty.

This CL will use the drawable type to set the color filter instead of
checking whether it is a first pair device.

Bug: 174279607
Test: make -j42 RunSettingsRoboTests
Change-Id: Ic5c348900db3e79e669173ec4ceeaec4d6500e5f