[Request] When cert-manager integration is disabled, display a warning about Agent insecure connections

### Describe the feature

When using the Operator's Agent Autoconfig, if cert-manager integration is disabled, it would be nice if the Cryostat CR config UI would show a warning to the user that this is unlikely to work unless the Agent insecure connections option is also enabled.

### Anything other information?

Start by locating the Operator's Agent Autoconfig handling and the Cryostat CR config UI, then trace how the cert-manager integration and Agent insecure connections options are represented. Done means the UI conditionally warns that Agent Autoconfig is unlikely to work when cert-manager integration is disabled unless insecure connections are also enabled.

Written by the indexing model from the issue text.