Fix isRegistered check in GetK8sInfraYaml(ChaosCenter/graphql)

[Nageshbansal]

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Dependency

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Special notes for your reviewer:

Because of the "isRegistered" check, the GetK8sInfraYaml function couldn't give us the Infra Manifest as it should. Instead, it gave us the Manifest with the message "Infra is Already Registered." To fix this and make the getInfraManifest gql API work properly, we had to remove the check. This also meant we had to change how ChaosCenter Frontend Handles the update command.

[Nageshbansal]

@Saranya-jena any updates on this?