[Eligibility Questionnaire][Accessibility] Heading hierarchy is incorrect

[elenm]

There are only level 2 and level 5 headings on the page.

This fix requires updates to the Bloom core components.

[willrlin]

Which page? Just the eligibility questionnaire or all pages?

Could you also say a bit more about what the fix would be? Do we need to adjust the heading hierarchy to include other levels across all ui-components or is there a smaller scope we can work with?

[elenm]

All the pages require the heading hierarchy to be fixed, but I intended the scope of this issue to to be for the eligibility questionnaire.

I actually went ahead and fixed the headings for the homepage as well because that was necessary for fix the eligibility questionnaire headings.