fix：size支持px

[tangying1027]

Checklist

• npm test passes
• tests and/or benchmarks are included
• commit message follows commit guidelines

Description of change

[github-actions]

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
f2/dist/index.js	+0.01%	1,650.29 kB	1,650.47 kB	+0.02%	311.20 kB	311.25 kB
f2/dist/index.min.js	+0.02%	517.54 kB	517.66 kB	=	154.35 kB	154.36 kB

Significant size changes

Includes any change greater than 0.2%:
(No significant changes)

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