[draft] [stable28] perf(rich_workspace): only add property for parent

[ShGKme]

Draft on 28, just because I was investigating on 28. I'll recreate on main soon

📝 Summary

Steps to reproduce

1. Add 300-500 s3 external storages and mount to root subfolder
2. Enable text
3. See 10-15s loading time on /apps/files/files for PROPFIND request. On real instance it could be up to 90 seconds for 300 storages

s3	28	27
0	0.1s	0.1s
100	3s	0.2s
200	6s	0.5s
300	9s	0.9s
400	12s	1-2s
500	15s	1.1-2.4s

A problem

There is a new <nc:rich_workspace> property for each Node in the response.

After disabling Text or disabling rich_workspace the problem disappears.

🚧 TODO

• [x] only add property for parent ignoring deep nodes as it was in past

🏁 Checklist

• [x] Code is properly formatted (npm run lint / npm run stylelint / composer run cs:check)
• [x] Sign-off message is added to all commits
• [ ] Tests (unit, integration and/or end-to-end) passing and the changes are covered with tests
• [x] Documentation (README or documentation) has been updated or is not required