Revert "Deprecate API: isAppSourceCertificateTrusted"

Revert submission 24590927-deprecate_fsv_sig

Reason for revert: b/299494922

Reverted changes: /q/submissionid:24590927-deprecate_fsv_sig

Change-Id: Icda4ecbb0b33f0fb991cf4930d45a38975de0845
4 files changed