Unhide RecoveryController#getRootCertificates()

This is so we can add a GTS test to affirm that GMS devices include the
Google Cloud Key Vault root certificate.

Test: runtest frameworks-core -p android.security.keystore.recovery
Bug: 74621045
Change-Id: Ib6431f5739f3dff066832e6aa300dd9da5bc0727
4 files changed