[Settings] Fix crash when user enter bluetooth page quickly.

 - When SliceManager try to pinSlice, process may not have the permssion
   yet, so in Androix lib it use try/catch to avoid Security exception.
   However, if SliceManger quickly unpinSlice after pinSlice, process
   may still not get the permission yet, then due to no security
   exception, it cause the settings crash.

Bug: 283065718
Test: atest passed
Test: Manual test passed
Change-Id: I2293fca73e65dfaa34237abe57e0c6a3fe0f62bb