Resolve "Error: Typed property Foodsharing\Modules\WallPost\WallPostXhr::$table must not be accessed before initi..."

Closes #1648 (closed), #1404 (closed)

What does this MR do?

Fixes two bugs in the loading of wall posts for reports:

• The wall was being loaded on the region's report page but is only intended for the report page on the profile
• The wall's name fsreport caused the backend to look for the database table fs_fsreport_has_wallpost which is actually called fs_report_has_wallpost. I renamed the wall to report.

How confident are you it won't break things if deployed?

Quite sure that the error on this wall is fixed. I am not sure, however, if the error occurs somewhere else too.

How to test

1. Checkout branch locally
2. Login as userorga
3. Go to any region's "Meldungsansicht" in the region menu
4. Check in the browser's console that there request http://localhost:18080/xhrapp?app=wallpost&m=update&table=report&id={id}&last=0 is successful without a 500 error

Checklist

• added a test, or explain why one is not needed/possible...
• no unrelated changes
• asked someone for a code review
• set a "for:" label to indicate who will be affected by this change
• added to the next milestone (see https://gitlab.com/foodsharing-dev/foodsharing/-/milestones, unless it has a "for:Dev" label)
• added an entry to CHANGELOG.md
• added a short text that can be used in the release notes
• Once your MR has been merged, you are responsible to create a testing issue in the Beta Testing forum: https://foodsharing.de/?page=bezirk&bid=734&sub=forum. Please change the MRs label to "state:Beta testing".
  • Consider writing a detailed description in German.
  • Describe in a few sentences, what should be tested from a user perspective.
  • Also mention different settings (e.g. different browsers, roles, ...) how this change can be tested.
  • Be aware, that also non technical people should understand.

Release notes text in German

Closes #1648 (closed)