Missing quota exceeded messages

[wkloucek]

Steps to reproduce

1. Set a quota on the personal space via the graph api
2. upload data and see the upload fail
3. check the error message

Expected behaviour

If the quota is exceeded we always get a message, that the quota is exceeded

Actual behaviour

We don't always get a precise error message:

This uploads a single file that is already bigger than the quota.

This uploads multiple files that in sum are bigger than the quota.

This uploads two files while one exceeds the quota:

Environment general

Backend (ownCloud Core or Infinite Scale):
oCIS owncloud/ocis@26f15c2 with ownCloud Web UI 5.7.0-rc.5

[AlexAndBear]

Related to:
#6930