Primary aliases being ignored in MusicBrainz?

### Problem

Last week I ran an `mbsync` over my library and noticed a ton of artists no longer use their locale-specific aliases.

Two example artists and their aliases:

- [東京酒吐座](https://musicbrainz.org/artist/a26f7ca4-d14c-408b-9f9c-c8d847286bd0/aliases) which should be "Tokyo Shoegazer"
- [دمار](https://musicbrainz.org/artist/f64892d3-b4cf-4fae-9141-e39c5d968ff0/aliases) which should be "Damaar"

No config changes made on my side. I suspect this might be a side-effect of dropping the old `musicbrainzngs` library for fetching data but I've not had a chance to fully debug this yet, so pure speculation on my part.

### Setup

* OS: Linux
* Python version: 3.14.2
* beets version: latest git
* Turning off plugins made problem go away (yes/no): no

Relevant part of my configuration:

```yaml
import:
copy: no
move: yes
timid: yes
write: yes
from_scratch: yes
languages:
- en
ignored_alias_types:
- 'legal name'
```

Start by reproducing the alias behavior with mbsync using the reported import.languages and ignored_alias_types configuration, then compare the results for the two linked MusicBrainz artists. Inspect the MusicBrainz fetching path, including the suspected replacement for musicbrainzngs and plugin interaction. Done means locale-specific primary aliases such as “Tokyo Shoegazer” and “Damaar” are restored without breaking ignored alias types.

Written by the indexing model from the issue text.