Duplication of Added Tag for individual source when downloading

[Eddyall-1]

Bug description

Having an added tag in Danbooru as a source duplicates them when trying to download, making it fail to do anything due to the 2 tags limit. Issue is also present in Gelbooru and likely others but has not caused buggy behaviour for them.

Steps to reproduce

1. Go to Sources > Danbooru > Options
2. Set an added tag such as "order:id"
3. Search for any artist
4. Click Get All to set a download for the results
5. Go to Downloads
6. Download the search
7. Go to Log
8. Observe that the download attempt was made with 3 tags, the artist + twice order:id

Expected behavior

Added tags are added once for download result and not twice
OR
Duplicated tags in a download could be automatically merged

Context

DanbooruBugLog.txt

Screenshots

System information

• OS: Mint 20.3 Cinnamont
• Grabber version: 7.9.1

Additional context

Issue also happen with Gelbooru but does not cause issues so far, however it showcase that for each page it's trying to load, the added tag sort:id:asc is being re-added.
GelbooruBugLog.txt