[JENKINS-71737] refactor to support dedicated cloud rename page

[car-roll]

downstream of jenkinsci/jenkins#8310

refactoring to support dedicated cloud rename page

Testing done

Manually created new cloud, changed its name, validated cloud name is not editable in config

Submitter checklist

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1. Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
2. Ensure that the pull request title represents the desired changelog entry
3. Please describe what you did
4. Link to relevant issues in GitHub or Jira
5. Link to relevant pull requests, esp. upstream and downstream changes
6. Ensure you have provided tests - that demonstrates feature works or fixes the issue

[jglick]

Does this relate to #1443?

[car-roll]

Does this relate to #1443?

@jglick no this was related to jenkinsci/jenkins#8310 which has now been closed