Rework delete org and rename org UI (#34762)

# What's the problem of the original implementation

Renaming organization will mix with organization's information change
make the operation difficult to keep consistent.

This PR created a danger zone like what's repository setting. It also
moved organization's `rename` and `delete` operations to this zone. The
original updating repository will not change the name any more.

This is also a step to extract the `updaterepository` function
completely.

Before:


![image](https://github.com/user-attachments/assets/d097dfdf-07be-4d79-8fcf-e78822515575)

![image](https://github.com/user-attachments/assets/42ee832c-cb44-41ec-9fe3-92a1c94747d2)

After:


![image](https://github.com/user-attachments/assets/f7700ed7-f104-4302-a924-09e118f24be3)

![image](https://github.com/user-attachments/assets/4c49952a-578e-4d14-bd01-4a68c9e02412)

![image](https://github.com/user-attachments/assets/814829d3-00fe-4e87-ae05-625c129170d2)

![image](https://github.com/user-attachments/assets/b067b263-c909-4b48-b23c-73481c32d350)

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/org/settings/navbar.tmpl

@@ -41,8 +41,5 @@
 			</div>
 		</details>
 		{{end}}
-		<a class="{{if .PageIsSettingsDelete}}active {{end}}item" href="{{.OrgLink}}/settings/delete">
-			{{ctx.Locale.Tr "org.settings.delete"}}
-		</a>
 	</div>
 </div>