Remove `aria-label` from `aria-hidden` icons

[cyberbaloo]

Problematic behavior
Icons hidden with the aria-hidden="true" attribute cannot have an aria-label attribute.

Expected behavior/code
<span aria-hidden="true" aria-label="Émoticônes du document" class="sc-34780e96-0 sc-262648e5-0 iiwUsF ihSnKO">🇫🇷</span>

Steps to Reproduce

1. Look for icons that are hidden with the aria-hidden="true" attribute in the left sidebar, and also in the document list when arriving on Docs.
2. Remove the aria-label attributes from these icons
3. and that's it!

Possible Solution
Remove the aria-label attributes from icons hidden with aria-hidden="true"