Fix Connect State message in Device details for Hearing Aids

In the Device details of Settings App and when using two Hearing Aids
devices (left and right sides), this will fix the connect state messages
for these two devices. Also added Robo tests for the changes.

Bug: 116317072
Bug: 117074814
Test: Manual tests and also ran RunSettingsLibRoboTests and RunSettingsRoboTests.
Change-Id: Ia9df6facd99ae91ebb4a819f61ea27551ce35efe
Merged-In: Id2dc364dfa815e72db91b92bcee9745e6c40d34a
Merged-In: Ia9df6facd99ae91ebb4a819f61ea27551ce35efe
(cherry picked from commit 3d8dd1ae2c5b7aad91594062e53ef3bc2db7212e)