fix: reject zero viewport dimensions in fingerprint records

[DYSfu]

Summary

• reject zero clientWidth, clientHeight, innerWidth, and innerHeight values in browser fingerprint training records
• keep valid zero offset fields such as availLeft, pageXOffset, and pageYOffset unchanged
• add schema regression coverage for the zero viewport case from Show results masking fingerprint when test in pixelscan #6

@algora-pbc /claim #6

Validation

• pnpm exec vitest run test/generator-networks-creator/generator-networks-creator.test.ts
• pnpm exec prettier packages/generator-networks-creator/src/record-schema.ts test/generator-networks-creator/generator-networks-creator.test.ts --check
• pnpm --filter generative-bayesian-network build
• pnpm --filter generator-networks-creator build
• pnpm lint