refactor(icons): prevent the textual representation from being announced

[mfranzke]

by providing an empty alternative text

Proposed changes

Resolves #2036

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (fix on existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

[github-actions]

🔭🐙🐈 Test this branch here: https://db-ui.github.io/mono/review/2036-testa11y-icon-would-get-announced-by-screenreaders-within-buttons

[nmerget]

Do we need the mixin here as well? A screen-reader might speak "none" otherwise

[mfranzke]

Do we need the mixin here as well? A screen-reader might speak "none" otherwise

Have you actually tested this? Judged by the specs, the pseudo-element wouldn't get rendered at all:
https://developer.mozilla.org/en-US/docs/Web/CSS/content?retiredLocale=de#none

[nmerget]

Do we need the mixin here as well? A screen-reader might speak "none" otherwise

Have you actually tested this? Judged by the specs, the pseudo-element wouldn't get rendered at all: https://developer.mozilla.org/en-US/docs/Web/CSS/content?retiredLocale=de#none

It was a question. But yes I tested it and it is removed from DOM completely