fix: [CLI] Handle errors while deleting files gracefully

[nmn]

A previous PR #680 had mysterious CI errors. This is a second attempt at the same change.

[github-actions]

workflow: benchmarks/size

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

@stylexjs/scripts@0.7.5 size:compare
./size-compare.js /tmp/tmp.YaSpjsr1CS /tmp/tmp.q7PWF2w7BT

Results	Base	Patch	Ratio
stylex/lib/stylex.js
· compressed	899	899	1.00
· minified	3,223	3,223	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	563,563	563,563	1.00
· minified	10,185,348	10,185,348	1.00
rollup-example/.build/stylex.css
· compressed	100,211	100,211	1.00
· minified	759,868	759,868	1.00