Bug Incorrect use of aria-label for tooltips

[Kirby]

When initializing a tooltip, the JS does set aria-label on the element which often isn't valid:

Code:

if (
        !$target.attr('aria-label')
        && !$target.attr('aria-labelledby')
        && !$.trim($target[0].textContent).length
)
{
        $target.attr('aria-label', title);
}

aria-label - Accessibility | MDN ​

The aria-label attribute defines a string value that labels an interactive element.

developer.mozilla.org

Not all elements can be given an accessible name. Neither aria-label nor aria-labelledby should be used...
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