Link to reported media URL in API Admin is incorrect

[AetherUnbound]

Description

It appears that many of the media URLs in our image/audio report tables display in the admin UI with the wrong URL. The URLs look something like https://openverse.org/v1/audio/<id> or https://openverse.org/v1/images/<id> for audio and images respectively. The paths themselves look like paths to the API, but the TLD directs to the frontend where every link 404s.

Reproduction

1. Visit https://api.openverse.engineering/admin/api/imagereport/
2. Observe the incorrect URLs

I was not able to reproduce this locally because reports made via the API show up with the correct domain.

Resolution

We'll need two separate fixes as part of this issue:

1. Fix the issue that's causing the incorrect URLs to be inserted
2. Correct the data which is currently wrong

[AetherUnbound]

Ah, it looks like it might be coming from here:

openverse/api/api/models/media.py

Lines 204 to 206 in aa16d4f

	url = (
	f"{AbstractMediaReport.BASE_URL}v1/{media_type}/{self.media_obj.identifier}"
	)

openverse/api/conf/settings/security.py

Line 35 in 9b4f727

BASE_URL = config("BASE_URL", default="https://openverse.org/")

I'm going to see if we set this in production at all or if it's left as the default (which is what's causing the problem I think).

[AetherUnbound]

Yep! That was it! I changed BASE_URL=https://openverse.org/ locally and submitted a report, and it's showing with the wrong URL. I'll get a PR here to change the default, and a PR in the infrastructure repo in case we're overwriting it there. Then we'll need to do a deployment and run either an SQL update or a data migration command to update the old data.

Update: Since this is actually a dynamic field and not one stored in the database, we can just update the configuration value and all the records should be updated! Yay!