**Steps to reproduce:**
Open a Test Wikidata Item with a `mul` label (and no other labels) using...
* ...different uselang settings (e.g. [John Doe II](https://test.wikidata.org/wiki/Q57591))
* ...mobile (https://test.m.wikidata.org/) vs desktop (https://test.wikidata.org/).
**What happens?**
Desktop:
* [In English](https://test.wikidata.org/wiki/Q57591?uselang=en), the heading uses the language name “multiple languages”, but the table (once you show “all entered languages”) uses the language name “mul”.
* [In British English](https://test.wikidata.org/wiki/Q57591?uselang=en-gb), the result is the same.
* [In German](https://test.wikidata.org/wiki/Q57591?uselang=de), the heading uses the language name „Mehrsprachig“, but the table uses the language name “mul”
* [In mul](https://test.wikidata.org/wiki/Q57591?uselang=mul), the heading doesn’t show a language name (because it’s not a language fallback in this case), but the table uses the language name “multiple languages”.
Mobile:
* Meanwhile, [on mobile](https://test.m.wikidata.org/wiki/Q57591), the termbox (mobile termbox, new termbox, termbox v2, etc.) always seems to use “mul” as the language name – except [in mul](https://test.m.wikidata.org/wiki/Q57591?uselang=mul), where you can briefly see the language name “multiple languages” before it gets replaced by JS with just “mul”.
**What should have happened instead?**
* In all cases the translated full name (e.g. "multiple languages") should be shown in both the heading and in the table.
* If there is no translation yet, then the our normal language fallback chain applies (e.g. to English as a last resort).
**Notes:**
* Why is the [specifically English](https://gerrit.wikimedia.org/g/mediawiki/extensions/cldr/+/6f74f8389c8d1d824bb2f12c7c55f7dbbd46755e/LocalNames/LocalNamesEn.php#193) name “multiple languages” only used when the page is loaded in `mul`, but //not// in English itself, nor in any other language?
**Acceptance criteria:**
[] We understand the problem that leads to this issue.
[] The problem is solved (or if solving the problem is out of scope then please create a follow-up task so we can discuss it).