Background
The label for the collapsed TOC dropdown (in both page tools and in the sticky header) is missing, this was previously working but probably regressed during PHP refactoring related to SkinComponents. This was discovered in T328480
AC
- The collapsed TOC dropdown button has an accessible label using the vector-toc-collapsible-button-label locale
QA Results - Beta
| AC | Status | Details |
|---|---|---|
| 1 | ✅ | T328584#8639525 |
QA Results - Prod
| AC | Status | Details |
|---|---|---|
| 1 | ✅ | T328584#8645580 |





