• Rule bug: input_label_exists, aria_widget_labelled, aria_accessiblename_exists

This PR is related to the following issue(s):

• Fixes Fix issues related to the tabbable widget with role 'none' #1920
• Fixes Handle case where nameRequired is true, but not a widget #396

Testing reference:

• test case: test/v2/checker/accessibility/rules/aria_accessiblename_exists_ruleunit/elements-no-label.html
• Switch to "Rules"
• Before the fixes: there were 8 violations: "Interactive component must have a programmatically associated name", with one for "radiogroup" and one for "alertdialog".
  and 5 recommendations: "Elements with certain roles should have accessible names", with one for "form" and one for "table".
• After the fixes: 6 violations, no violation for "radiogroup" or "alertdialog".
  and 3 recommendations, no recommendations for "form" or "table".

I have conducted the following for this PR:

• I validated this code in Chrome and FF
• I validated this fix in my local env
• I provided details for testing
• This PR has been reviewed and is ready for test
• I understand that the title of this PR will be used for the next release notes.

Assets to aide review attached

• Links to design artifacts
• Links to video walkthrough of user experience
• Other

Definition of Done

• Peer review complete
• Secondary review complete
• Staging deployment verified