This reverts commit 19d1d3d15d.
Reason for revert: revert it because this is not the root cause.
bug: 316867690
Change-Id: I0f168dbb64044aa720202af7b1040afd4f028c9c
This reverts commit cf0501e4d7.
Reason for revert: b/317462033, it seems a flaky but revert it first.
Change-Id: Ie1d5e279cca6477fc17d8c27c1ecda8d7a6b2553
If users click to pair a not foundable device and then close the Settings page,
Settings will crash becasue dialog holder is closed.
This CL is part of the fix. It set the context to null when the activity
stops.
Bug: 306548036
Test: atest
Change-Id: If68e3e9cd62216ad83b2e5058f504fce35e36a06