Links in tables are not transformed to and from resolveuid

[pbauer]

Links in tables in Volto do not use resolveuid.
When creating a link a full url is stored (which will break when deploying since the full url includes the domain).
When rendering a (e.g. imported or manually created) link that uses resolveuid it is not transformed to a path and is also broken.

Especially annoying: When migrating text in tables from classic to volto the links are correctly migrated to use resolveuid but since the transforms are not applied these links are all broken.

To Reproduce
Steps to reproduce the behavior:

1. Create a table block with a link and a stale-block with a link
2. Inspect the raw block and see that the link in the text uses "data": {"url": "../../resolveuid/39e4910bd5404b00a0e58bb55cc90c5c"} whereas the link in the table uses "data": {"url": "http://localhost:3000/ziel"}

Expected behavior
Both should use resolveuid.

Software:

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Volto 16.12.0-dev (current master)
• Plone 6.0.1
• Plone REST API Version 8.33.3

[erral]

We had to explicitly add a new slateTable BlockSerializer to have this working in a recent project.

I will add the PR with the changes.

[erral]

This issue should be transferred to plone.restapi.

[pbauer]

@erral Thanks a lot, I tested your branch and it works fine now!