After deleting a software-generated key, getKeyEntry was falling
through to the real keystore2 service which could return a stale
hardware key with the same alias. The post-transact live-patch
fallback would then resurrect the key with a patched chain,
detectors flag this as binder inconsistency.
Track deleted software key aliases and return KEY_NOT_FOUND (7) for
subsequent getKeyEntry calls. Also always invoke cleanupKeyData on
delete to clear stale patchedChains entries for hardware keys.
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