**Problem:**
Currently, it appears as if editors can add `mul` descriptions in the termbox. But when they try, they receive an error message, that says `mul` is not allowed for descriptions. We need to make this more intuitive.
**Notes:**
* In story writing, it was decided to split the original task into viewing (T329644) and editing (T338302).
* T332174 does the same thing for mobile
* The reason is that we only allow the language code `mul` for Labels and Aliases and not for descriptions (T313027).
**Solution:**
* Remove descriptions for `mul` language code from the users' termbox workflow
* If a WM message already exists for "–" (disabled field) then use that.
**Mockups:**
{F37101614}
| [[ https://www.figma.com/file/UMHGYSxln03lGx2z7GxzP2/Multiple-languages?type=design&node-id=340-7833&t=KvqPaS6KVxnGWI5s-0 | Link to Figma specs ]] |
**Acceptance criteria:**
[] When viewing an Item on desktop, the termbox shows an n-dash ("–") as a description for `mul` (see mockup).
[] Users of screen reader technology receive the right prompt (see specs)
[] Release to test.wikidata.org
**Considerations:**
* UX: The n-dash symbol ("–") should be marked for localization for it to be understood in all cultures. It appears that a WM message doesn't exist for this symbol. We should indicate to volunteers that the symbol is meant to show that the description is intentionally missing, and that we welcome translations that might communicate this fact better in their language. In case this is possible to do, then we should add a new AC.