[eslint-plugin] allow local resolved constants in valid-styles number checks

[mellyeliu]

The isNumber lint check was incorrectly flagging identifiers for constants declared in the same file. We generally allow them in place of number literals as Babel handles the static evaluation of these bindings.

The rule now resolves scope correctly so that same-file const identifiers initialized with numbers can be used within arithmetic expressions and pass without error.

Within the isNumber check

• resolve math expressions down to both sides as before
• use getScope to determine whether any identifiers are declared within the file

[github-actions]

workflow: benchmarks/perf

Comparison of performance test results, measured in operations per second. Larger is better.

benchmarks@0.15.3 compare
node ./compare.js /tmp/tmp.msjDvKkzSg /tmp/tmp.AElsaN1Mkl

Results	Base	Patch	Ratio
babel-plugin: stylex.create
· basic create	642	641	1.00	-
· complex create	190	188	0.99	-
babel-plugin: stylex.createTheme
· basic themes	452	448	0.99	-
· complex themes	42	42	1.00

[github-actions]

workflow: benchmarks/size

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

benchmarks@0.15.3 compare
node ./compare.js /tmp/tmp.DLsJEYfZx2 /tmp/tmp.tOpCWllIyW

Results	Base	Patch	Ratio
@stylexjs/stylex/lib/cjs/stylex.js
· compressed	1,190	1,190	1.00
· minified	3,541	3,541	1.00
@stylexjs/stylex/lib/cjs/inject.js
· compressed	1,223	1,223	1.00
· minified	3,216	3,216	1.00
benchmarks/size/.build/bundle.js
· compressed	496,650	496,650	1.00
· minified	4,847,840	4,847,840	1.00
benchmarks/size/.build/stylex.css
· compressed	99,853	99,853	1.00
· minified	747,541	747,541	1.00