[Notifications] notification message should be more specific

[amrita-shrestha]

Steps to reproduce

1. Admin creates space hello
2. Admin add user Roy to space hello with space-role manager
3. notification contains message Admin added you to Space hello
4. Admin changed Roy space-role to 'editor'
5. new notification pop-up with the message Admin added you to Space hello
   

Expected behaviour

While role changed notification message should be something like this `Admin changed your role to the editor in Space hello``

Actual behaviour

Admin added you to Space hello

Environment general

Operating system: ubuntu 22.04

Backend (ownCloud Core or Infinite Scale): ocis

Are you using an external user-backend, if yes which one: LDAP/ActiveDirectory/Webdav/...

Environment ownCloud Infinite Scale

Version: latest

Updated from an older Infinite Scale or fresh install: fresh

Where did you install Infinite Scale from: github

[ScharfViktor]

It is backend issue. This is because we use the same request for creating and changing space sharePOST https://localhost:9200/ocs/v1.php/apps/files_sharing/api/v1/shares so requests GET https://localhost:9200/ocs/v2.php/apps/notifications/api/v1/notifications?format=json are same

Web can't tell the difference

[ScharfViktor]

The user does not receive notification of a space role change anymore
#6649 (comment)