Downloading SVG makes links non functional

[ane-gabriela]

Seems to be a regression for #130

Steps to reproduce:

1. Create a new Diagram

2. Add some shapes

3. Add a word in each shape

4. Select the word from one of the shapes

5. Click on the Link... button below Insert from the right panel

6. Select a wiki page > Apply
   

7. Select another shape/word

8. Click on the Link... button below Insert from the right panel

9. Select External and paste an URL eg. https://en.wikipedia.org/wiki/Flower
   

10. Click File > Export as > SVG...

11. Click on Export

12. Click on Download > Save

13. Open the SVG

14. Click on each of the links

Expected results: The links are showing as expected.

Actual results: When clicking on the link to the internal page it gives "javascript:void(0);" and the link to the external url doesn't work at all - it's just like text not a link.

Environment: XWiki 14.10.18 with Diagram version 1.21.1-rc-1, Chrome 131, Windows 11 Pro