Add platformFetch to PlatformConfig

[seveibar]

Motivation

• Expose a fetch-compatible hook on the platform configuration so consumers can provide a platform-specific fetch implementation for network requests.

Description

• Added platformFetch?: typeof fetch to the PlatformConfig TypeScript interface in lib/platformConfig.ts.
• Added a Zod validator platformFetch and included it in the exported platformConfig schema to validate the optional platformFetch property.
• Regenerated documentation artifacts to include the new option in README.md and generated/PROPS_OVERVIEW.md.
• Formatted the repo sources.

Testing

• Ran the docs/generator scripts: bun scripts/generate-component-types.ts, bun scripts/generate-manual-edits-docs.ts, bun scripts/generate-readme-docs.ts, and bun scripts/generate-props-overview.ts, all of which completed successfully.
• Type-checked the project with bunx tsc --noEmit, which succeeded.
• Ran formatting with bun run format, which succeeded.

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Codex Task

[tscircuitbot]

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PR Rating: ⭐⭐
Impact: Minor

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