HtmlSlateWidget to proper identify the field to screen readers

[Wagner3UB]

Correction applied to ensure proper screen reader identification of text fields created through the HtmlSlateWidget.

PR volto 18 #6803

[giuliaghisini]

@Wagner3UB some tests are failing, probably because you have to update snapshots..
Could you also make a pr for main too?

[giuliaghisini]

@Wagner3UB there are some test still failing.. check them

[Wagner3UB]

@davisagli Can you help me here? I don’t think the problem is related to my changes. Cypress is returning an error in the file field.js when it tries to create a new text block from the ‘most used’ ones, but the text block isn’t there. In other words, the text block is not one of the most used ones.

cy.get('.blocks-chooser .mostUsed .button.testBlock').click();

Screenshot:

[nileshgulia1]

@Wagner3UB I had something like this when running tests locally and found out that I was not running with the correct fixture. Maybe try running with coresandbox fixtures specifically?