Many warnings in the browser due to missing aria label

[susnux]

Describe the bug
There are many warnings in the browser because there are buttons which have no accessible name.
All interactive elements need either a visual name (e.g. the button text) or an accessible aria name.

In this component all buttons only have a title but no label - neither visible nor aria:
https://github.com/nextcloud/text/blob/f8fb432627db6b9216d10ab331c9f62c402b434e/src/components/Editor/FloatingButtons.vue

Expected behavior
Either visible text or set the same as you have as title as aria-label (basically put it for both title and aria-label).

Server details:

• Nextcloud version: 33 and 32