Multiple fixes for PTS-bot GATT profile tests

- Read characteristics using UUID now returns a list of
read characteristics. Each characteristics that has a
matching UUID and handle contained in the start handle
and end handle of the request is read.
- MMIs don't return "No" anymore, instead either we
assert that the result is correct or raise an exception if
the check does not pass
- Ran the ktfmt on Gatt.kt and GattInstance.kt
- Fixed SDP tests that checked the wrong value

Bug: 239103399
Test: atest pts-bot:GATT/CL/GAR --rerun-until-failure
Test: atest pts-bot:GATT/CL/GAD --rerun-until-failure
Tag: #feature
Change-Id: Ife8d43545c77c2eb52d0a0ca57643a6213c0103c