FE: Add editing latest version warning to edit page

What does this MR do and why?

This introduces a warning to the user that they are editing the latest version of an item when they click "edit" on a version that has an update available. This is to avoid semantic version issues and the user to create a duplicate of the version they wish to edit first instead.

Screenshots or screen recordings

How to set up and validate locally

1. Create a new agent or flow and enable it in the project
2. Navigate to the EDIT page. You should not see a warning.
3. Make an edit to the agent or flow and save it.
4. Navigate to the EDIT page again. You should see a warning at the top.
5. Clicking the link in the warning alert should route you to the /duplicate page with the agent or flow your project is currently pinned to.

MR acceptance checklist

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Related to #578590 (closed)