fix: Stop polyfilling logical text-align

[nmn]

Fixes #627

The styleResolution: 'legacy-expand-shorthands' configuration also converts logical properties to physical properties for supporting very old browsers.

Turns out that logical text-align has been supported in even the oldest browsers, so deleting the code that converts those logical values to physical ones.

[github-actions]

compressed-size: runtime library

Size change: 0.00 kB
Total size: 2.52 kB

View unchanged

Filename: gzip (minify)	kB size	kB change	% change
./packages/stylex/lib/stylex.js	1.04 (3.22)	0.00 (0.00)	0.0% (0.0%)
./packages/stylex/lib/StyleXSheet.js	1.48 (3.75)	0.00 (0.00)	0.0% (0.0%)

[github-actions]

compressed-size: e2e bundles

Size change: -0.05 kB
Total size: 1125.68 kB

Filename: gzip (minify)	kB size	kB change	% change
./apps/rollup-example/.build/stylex.css	123.19 (774.43)	-0.05 (-0.44)	-0.0% (-0.1%)	🟢

View unchanged

Filename: gzip (minify)	kB size	kB change	% change
./apps/rollup-example/.build/bundle.js	1002.49 (10185.35)	0.00 (0.00)	0.0% (0.0%)