Storybook: Add stories for HeadingLevelDropdown component

[Sukhendu2002]

Part of #67165

What?

This PR will add stories for HeadingLevelDropdown component in the Storybook

Testing Instructions

1. Run npm run storybook:dev
2. Open the storybook on http://localhost:50240/
3. Check the HeadingLevelDropdown stories.

Screenshots or screencast

[github-actions]

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Co-authored-by: Sukhendu2002 <[email protected]>
Co-authored-by: dcalhoun <[email protected]>
Co-authored-by: t-hamano <[email protected]>

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[dcalhoun]

It may be worth waiting to merge until feedback is shared on #67165 (comment). It may also be worthwhile to request code review from those that respond, I have less context on the state or desires for Storybook usage.

[dcalhoun]

Thanks for addressing my feedback. 🙇🏻‍♂️

I'm removing the review request for myself, and requesting review by @t-hamano. I believe @t-hamano likely has better context for how the project would like to leverage Storybook.

[t-hamano]

Thanks for the PR! I've made a few suggestions, but overall it seems good 👍

[Sukhendu2002]

Hi @t-hamano, Thanks for the feedback! I’ve updated it accordingly.

[t-hamano]

LGTM! Works as expected 👍

957a160c3327387ab30d782e600d2313.mp4