[Editorial] - [in6db8] ARIA required ID references exist - Passed Example 2 improvement

[giacomo-petri]

Closes issue(s): #2245

Description:

This PR adds the required acc name to the element with explicit role="listbox"
from

<label for="tag_combo">Tag</label>
...
<ul role="listbox" id="popup_listbox">

to

<label for="tag_combo" id="tag_label">Tag</label>
...
<ul role="listbox" id="popup_listbox" aria-labelledby="tag_label">

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Duplicate organisation