fix: improve parseAs handling and cleanup lint issues

[aartisonigra]

Summary

This PR improves getParseAs handling and fixes related type safety issues.

Changes

• improved getParseAs() response parsing logic
• cleaned up unused variable warnings
• fixed empty catch block lint issue
• migrated example scripts from require() to ES module imports
• improved request/response handling consistency
• fixed lint and formatting issues

Testing

• pnpm lint:fix
• pnpm build
• pnpm test

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[changeset-bot]

🦋 Changeset detected

Latest commit: b684dac

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@hey-api/openapi-ts	Patch
@hey-api/custom-client	Patch
@test/openapi-ts	Patch
@hey-api/shared	Patch
@hey-api/vite-plugin	Patch
@hey-api/openapi-python	Patch

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[aartisonigra]

Can you please review my PR?

[mrlubos]

@aartisonigra please make sure CI checks pass!

[mrlubos]

please make sure CI checks pass!

[aartisonigra]

@mrlubos ,The build output is successfully generated and all dist artifacts are present. However, tsdown fails in a post-build “pack” step with a TypeError (reading 'filename'), which appears to be a tooling issue rather than a change introduced in this PR.