chore(linter): improve the documentation of eslint/no-sparse-arrays

[therewillbecode]

Relates to #6050

Adds correctness and incorrectness examples following rule documentation template.

[graphite-app]

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[codspeed-hq]

CodSpeed Performance Report

Merging #9180 will not alter performance

_{Comparing therewillbecode:chore/eslint-no-sparse-arrays (4763941) with main (d70bad3)}

Summary

✅ 33 untouched benchmarks

[graphite-app]

Merge activity

• Feb 17, 9:39 PM UTC: @therewillbecode we removed the merge queue label because we could not find a Graphite account associated with your GitHub profile.

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