XWIKI-23097: Quicksearch: no alert when results are shown

[Sereza7]

Jira URL

https://jira.xwiki.org/browse/XWIKI-23097

Changes

Description

• Added the alert role to the container of suggestions.

Clarifications

• The component is already pretty accessible, but nothing was conveyed to notice the users that some new content has been queried and displayed. This attribute is enough to fulfill this lack of info.
• There is a lot of info read out when the dropdown is activated. This is an issue for clarity, but I guess it's not that important and it's better than no information at all.

Screenshots & Video

Video demo with the changes proposed here applied:

2025-05-05.17-01-10.mp4

Made using browserStack, Chrome 136 + NVDA

Note that before the changes in here were applied, all that would be read out to the user are the letters they added to the input:

p
a
g
e

Now, as we can listen to in this demo, those letters are followed by the content of the asynchronously generated dropdown:

p
a
g
e
Go to search page button.
[...]

Executed Tests

Manual tests, see above.
https://github.com/search?q=org%3Axwiki+suggestItems&type=code shows that the changes do not affect the pageobject associated to this element used in docker tests.

Successfully built mvn clean install -f xwiki-platform-core/xwiki-platform-web/xwiki-platform-web-war/ -Pquality.

Expected merging strategy

• Prefers squash: Yes
• Backport on branches:
  • 16.10.X, this is a minor bug with a very low risk solution.