Fix / accessibility bugs and form validation

[MelissaDTH]

Description

This pull request includes recent accessibility improvements implemented in the Videodock/ott-web-app fork. It includes validation improvements and an update to the IconButton component, see below:

Implemented fixes

• Enhances form validation on the Account page
• Fixes an issue with the old password form where errors persisted after validation
• Updates the IconButton component to utilise a <button> element instead of a <div> element, this improves its accessibility by providing a more semantically correct representation of a clickable button, ensuring that aria attributes function as intended
  • Also ensures adherence to button styling and prevents them from acting as a submit button after the above fix

Commits

• fix(project): improve form validation on account page
• fix(project): old password form error after validation
• fix(a11y): icon button to use button element
• chore(a11y): adhere icon button styling & don’t act as a submit button
• fix(a11y): focus not returned when closing the main menu using VoiceOver

  Steps completed:

According to our definition of done, I have completed the following steps:

• [x] Acceptance criteria met
• [x] Unit tests added
• [ ] Docs updated (including config and env variables)
• [ ] Translations added
• [x] UX tested
• [x] Browsers / platforms tested
• [x] Rebased & ready to merge without conflicts
• [x] Reviewed own code

[AntonLantukh]

@MelissaDTH could you please take a look? The PR looks good, just some minor things I wanted to clarify.