Links in the diagram aren't updated when the linked pages are moved/renamed

[ane-gabriela]

Steps to reproduce:

1. Create a page eg. Page 1
2. Create a diagram with shapes that contain text
3. Add a link on one of the text to Page 1
4. Move / Rename "Page 1" to "QA Test"
5. Access the diagram
6. Observe the link to the page
   
7. Click on the link

Expected results: The link to the page is updated with the new location and/or name. Related to #110

Actual results: The link to the page remains the same, it's not updated, which makes the user to be redirected to a non existing page.

Environment: Windows 11, XWiki 14.10.10, Chrome 114, Diagram Application (Pro) 1.19

[ane-gabriela]

Issue reproducing on Windows 11, Chrome 125. Cloud XWiki 15.10.8, Diagram Application (Pro) 1.20.4

[claudiuion117]

I reproduced this issue on Firefox 128.0.3. , XWiki 15.10.8. on premise with Diagram App Pro 1.20.4. and on XWiki version 15.10.11. (LTS version)

[ane-gabriela]

Reproducing on Windows 11, XWiki 15.10.10, Chrome 128, Diagram Application (Pro) version 1.21-rc-1

[Farcasut]

This issue has two causes:

• Backlinks aren't added for wiki pages referenced in a diagram content starting with XWiki 14.8 #294

• Links to wiki pages are added in the wrong format in the diagram content #295

Each of them breaks the update links functionality because of a different reasons (one can be reproduced starting with Diagram versions >= 1.20.3, and the other with XWiki versions >= 14.8. )
Both issues need to be closed for fixing the update links feature