Updates figure 2.1 in the JavaScript 2022 chapter (#3388)

* Updates figure 2.1 in the JavaScript chapter to include labels for mobile.

* Optimised images with calibre/image-actions

* Retake image and compress with tinypng

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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Barry Pollard <barrypollard@google.com>

Author: 3 people