Accessibility: Add localized aria-label to Download button in viewer … #20534
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Summary
Adds a localized
aria-labelto the Download button in the viewer toolbar to improve accessibility for screenreader users.
Details
Previously, only the
titleattribute was localized, so the button did not expose an accessible name. By addingdata-l10n-attrs="title aria-label", bothtitleandaria-labelare now populated by the localization system,consistent with other toolbar buttons.
Result
Screen readers can now correctly announce the purpose of the Download button.
Fixes: #20473