fix: revert npm ci

[mellyeliu]

What changed / motivation ?

Vercel builds seem to be erroring with #906, let's switch back to debug. package-lock.js in main may be in a weird state

Pre-flight checklist

• I have read the contributing guidelines
  Contribution Guidelines
• Performed a self-review of my code

[github-actions]

workflow: benchmarks/size

Comparison of minified (terser) and compressed (brotli) size results, measured in bytes. Smaller is better.

@stylexjs/[email protected] size:compare
./size-compare.js /tmp/tmp.OJpux1UdaN /tmp/tmp.1MSFeIHX29

Results	Base	Patch	Ratio
stylex/lib/stylex.js
· compressed	985	985	1.00
· minified	3,154	3,154	1.00
stylex/lib/StyleXSheet.js
· compressed	1,266	1,266	1.00
· minified	3,776	3,776	1.00
rollup-example/.build/bundle.js
· compressed	567,170	567,170	1.00
· minified	10,232,457	10,232,457	1.00
rollup-example/.build/stylex.css
· compressed	100,609	100,609	1.00
· minified	755,721	755,721	1.00

[necolas]

postinstall might not run after ci