refactor(linter): Improve jest-prefer-hooks-in-order

[therewillbecode]

• Refactor if lets into let ... else for better readability through reduced nesting.
• Add correctness examples to docs and a why is this bad? section. Relates to Improve linter rules documentation #6050

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[codspeed-hq]

CodSpeed Performance Report

Merging #9892 will not alter performance

_{Comparing therewillbecode:refactor/jest-prefer-hooks-in-order (4b25845) with main (d4a83ba)}

Summary

✅ 33 untouched benchmarks