Follow-up from "Integration of old duo-ui based siderail"

The following discussions from !204655 (merged) should be addressed:

• @GitLabDuo started a discussion: (+1 comment)

  The cleanupSocket() method is called in beforeDestroy but this method is not defined in this component. This will cause a runtime error when the component is destroyed.

• @afontaine started a discussion:

  we've been putting these flags here

  also I'm pretty sure only: :show skips a log of actions (like :index) that could use this flag? I'm not certain though.