Changes getAdasAllowlist so that it is protected with the newly added...

Changes getAdasAllowlist so that it is protected with the newly added permission `ACCESS_LOCATION_BYPASS_ALLOWLIST` and becomes a system api.

This change also adds ACCESS_LOCATION_BYPASS_ALLOWLIST to Shell for XTS.

Flag: android.location.flags.change_get_adas_allowlist_from_hidden_to_system
Bug: 362287534
Test: atest CtsSecurityTestCases:LocationDisabledAppOpsTest
Test: atest GtsLocationTestCases:AdasPackageAllowlistTest
Change-Id: I4c9e8d9d49522555f2f227215294ac0da71b9f08