Hearingaid: Handle the data channel open fail case during connecting

* Will trigger GATT disconnect when the data channel is not available.
* Remove device form hearingaids list when the address is useless during
  do Disconnect.

Tag: #feature
Test: gd/cert/run
      HearingAid Connection test Pass
Bug: 220269698
Change-Id: Id4284758db9563cb4a7f14ef8d1841c6ca0ad263