TEST_MAPPING: re-enable ScanningSettingsTest in presubmit

The ticket has been fixed and the test is now passing.
The test class has been passing in post-submit testing
for a while.

Bug: 293934372
Test: ABTD run of 25 of ScanningSettingsTest#testBleScanningSettings
Change-Id: I619d6a27c24df7da966d1a797e88f0573ad8f292
Signed-off-by: Lucas Henneman <henneman@google.com>