fix: oembed

[bigint]

What does this PR do?

🤖 Generated by Copilot at c71a1fe

Refactored getMetadata function in oembed worker to use a custom proxy URL generator and type assertions. This enhances the code quality and efficiency.

Related issues

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (non-breaking small changes to existing functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Explanation of the changes

🤖 Generated by Copilot at c71a1fe

• Replace @cfworker/base64url dependency with custom getProxyUrl function to reduce bundle size and simplify URL encoding and transformation (link)
• Refactor getMetadata function to use getProxyUrl function and add type assertions for isLarge and image variables to improve type safety and readability (link)
• Remove unused variables isProduction and workerUrl from getMetadata.ts (link)

Emoji

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