crypto: Connect the backup disabling method

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/OlmMachine.kt

@@ -796,20 +796,28 @@ internal class OlmMachine(
         }
     }
 
+    @Throws(CryptoStoreException::class)
+    fun disableBackup() {
+        inner.disableBackup()
+    }
+
     fun backupEnabled(): Boolean {
         return inner.backupEnabled()
     }
 
+    @Throws(CryptoStoreException::class)
     fun roomKeyCounts(): RoomKeyCounts {
         // TODO convert this to a suspendable method
         return inner.roomKeyCounts()
     }
 
+    @Throws(CryptoStoreException::class)
     fun getBackupKeys(): BackupKeys? {
         // TODO this needs to be suspendable
         return inner.getBackupKeys()
     }
 
+    @Throws(CryptoStoreException::class)
     fun saveRecoveryKey(key: String?, version: String?) {
         // TODO convert this to a suspendable method
         inner.saveRecoveryKey(key, version)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/keysbackup/RustKeyBackupService.kt

@@ -168,7 +168,7 @@ internal class RustKeyBackupService @Inject constructor(
                 // Reset backup markers.
                 // Don't we need to join the task here? Isn't this a race condition?
                 cryptoCoroutineScope.launch(coroutineDispatchers.crypto) {
-                    // TODO reset our backup state here, i.e. the `backed_up` flag on inbound group sessions
+                    olmMachine.disableBackup()
                 }
 
                 val keyBackupVersion = KeysVersionResult(
@@ -213,18 +213,7 @@ internal class RustKeyBackupService @Inject constructor(
      */
     private fun resetKeysBackupData() {
         resetBackupAllGroupSessionsListeners()
-
-        /*
-
-        TODO reset data on the rust side
-        cryptoStore.setKeyBackupVersion(null)
-        cryptoStore.setKeysBackupData(null)
-        backupOlmPkEncryption?.releaseEncryption()
-        backupOlmPkEncryption = null
-
-        // Reset backup markers
-        cryptoStore.resetBackupMarkers()
-        */
+        olmMachine.disableBackup()
     }
 
     override fun deleteBackup(version: String, callback: MatrixCallback<Unit>?) {