fix: Use relative paths to dav root

[juliusknorr]

@susnux After #2392 and #2414 the filename attribute is still different from before. Before we used to have the relative path based on the user home or public share, how it actually includes the files/userId/ dav root.

My quick fix proposal would be to change the root that the dav client uses so the path it returns for filename is again relative to that root.

We could otherwise of course adjust apps that make use of that path, but I think the path relative to the root is more useful then the full dav path.

Before the refactor: /MyFolder/test.odt
After the refactor: /files/admin/MyFolder/test.odt
After this PR: /MyFolder/test.odt

• Needs cypress to run again on CI ci: Run cypress tests properly again on CI #2416

Test CI runs for text, richdocuments:

• tmp: test ci against viewer branch richdocuments#3900
• tmp: test ci against viewer branch text#6201

[juliusknorr]

/compile

[susnux]

But you can pass the relative URL and it will get the root added?
Nevertheless if this is causing issues in text than lets do it for 30, as tomorrow we have RC1

[juliusknorr]

But you can pass the relative URL and it will get the root added?

You mean when calling davGetClient ?