[QS] Update secondary text + label for bluetooth tile

Switches the label to be the device name when a device is connected and
updates the secondary label to be the battery level/device type.

We've retained the battery sub-icon for now next to the Bluetooth icon.

Test: Visually/manually tested with some devices+toggling bluetooth
Bug: 70799372
Change-Id: Ida6303ec34b5d5c5bf24703550febebc580d0afa