Refactor flakey BLE always scanning setting test

Refactor to match non-flakey WiFi always scanning setting test

Bug: 410835681
Test: atest android.location.cts.fine.ScanningSettingsTest
Flag: TEST_ONLY

Change-Id: I5d50a17df96d1c5dd9696957aafe5d31fedae0e4
1 file changed