(#2101, #2102) Accordion Init Bug + 16x9 Images Update

[karlikpj]

Closes #2101
Closes #2102

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• I have reviewed the acceptance criteria defined in the ticket and ensured the work has been completed.
• The commit message passes all quality commit message standards.
• Unit tests have been updated or created to reflect any javascript changes.
• Storybook scenarios have been updated or created to reflect any html/css/js changes.

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• WCAG 2.1 Level AA requirements have been met.

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• Any new or updated javascript code has 100% unit test coverage.
• New or updated breakpoints have regression images.
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• There are no unexpected or unapproved regression image changes.

• Functionality of interactive elements meet the acceptance criteria.
• The product is visually and functionally the same across the different browsers.

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• AxeDev Tools: there are no new or outstanding accessibility issues introduced in this PR.
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• Wave: there are no new errors or contrast errors introduced in this PR.

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• New or updated features introduced in this PR are developed mobile-first.
• Breakpoint changes and regression images match those breakpoints.
• This PR has been tested in all supported browsers at all breakpoints.

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• VoiceOver: Described content matches with what was expected.
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• The documentation site
• NCIDS JS Documentation
• The storybook site
• The example site

[github-actions]

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• The documentation site
• NCIDS JS Documentation
• The storybook site
• The example site

[adrianacastaneda]

Feature cards on the example site look good! Thanks @karlikpj!

[bennettcc]

Approved by product and experience on 1/20 - adding the checkmark