Use QS context when creating the bluetooth battery indicator

SysUI context doesn't know about the dark theme change when trying to
set the tint on the BluetoothDeviceLayerDrawable, so change the icon to
one that isn't cached so it can use the QS context and use the right
tint when in dark mode.

Test: set dark background, visual
Change-Id: If9255e2d2155ebcd355ddf26f06385e73aab68d6
Fixes: 66497162