[SDK] Invalid recovery key

### Description

Trying to restore keys with a RecoveryKey but getting this error: `java.security.InvalidParameterException: Invalid recovery key`

Looking deeper into the SDK isValidRecoveryKey seems to be where it goes wrong. For some reason the public keys of recoveryKey and backup are mismatched.

```kotlin

// SDK part
private fun getMegolmBackupAuthData(keysBackupData: KeysVersionResult): MegolmBackupAuthData? {
return keysBackupData
.takeIf { it.version.isNotEmpty() && it.algorithm == MXCRYPTO_ALGORITHM_MEGOLM_BACKUP }
?.getAuthDataAsMegolmBackupAuthData()
?.takeIf { it.publicKey.isNotEmpty() }
}

private fun isValidRecoveryKey(
recoveryKey: IBackupRecoveryKey,
version: KeysVersionResult
): Boolean {
val publicKey = recoveryKey.megolmV1PublicKey().publicKey
val authData = getMegolmBackupAuthData(version) ?: return false
println("------------ Keys ------------")
println(publicKey)
println(authData.publicKey)
println("------------ Keys ------------")
return authData.publicKey == publicKey
}

// Usage Part
private suspend fun recoverSecrets(recoveryCode: String) {
val backupRecoveryKey = BackupUtils.recoveryKeyFromBase58(recoveryCode)
val keysVersionResult = this.session.cryptoService().keysBackupService().keysBackupVersion
?: throw Exception("Keys backup version not found")

isValidRecoveryKey(backupRecoveryKey, keysVersionResult)

this.session.cryptoService().keysBackupService()
.restoreKeysWithRecoveryKey(keysVersionResult, backupRecoveryKey, null, null, null)

}

recoverSecrets("E*** **** **** **** **** **** **** **** **** **** **** ****")
```

Printing out the public keys we get

```
System.out com.prototype I ------------ Keys ------------
System.out com.prototype I o2RJ1aVoFbdLMqTT9IYKrVcECQf1ZI/9M1SI7XB7ngA
System.out com.prototype I HxaK0V+kyJDKksX6z3Cv4UmIKfDiSt3hgeQ46FBT+Ws
System.out com.prototype I ------------ Keys ------------
```

RecoveryKey has been just copied over from Element. I've tried regenerating the recovery key. both public keys update but are always mismatched.