[Enhancement]: Allow users to change the site URL from the dashboard

### Affected Area

None

### Problem Statement

Often we get tickets where user wants to change the site URL, the only option is to do it from desk.

Can we have a feature under site actions so that the users can themselves do it from the site dashboard.

### Proposed Solution

_No response_

The issue names no files or tests; start by locating the site's dashboard and its Site Actions entry point, then compare it with the existing Desk flow for changing a site URL. Define the behavior and constraints with maintainers before implementation; done means users can change the site URL from the dashboard.

Written by the indexing model from the issue text.