Fix: Image widget editor fails to calculate image dimensions · Khan/perseus@32674f9

There should be at least one empty line between import groups

`util/types` import should occur before import of `@khanacademy/perseus`

'isBooleanObject' is defined but never used. Allowed unused vars must match /^_*$/u

img elements must have an alt prop, either with meaningful text, or an empty string for decorative images

'image' is never reassigned. Use 'const' instead

Insert `;`

Missing semicolon

Delete `··`

Error: Command failed: yarn lint "packages/perseus-editor/src/widgets/image-editor.tsx" "packages/perseus/src/util.ts"

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

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