common: request throws if parseAs is json and the response body is empty

[hunterachieng]

Summary

An error is thrown when we use parseAs=json if the response body is undefined when PUT or POST requests are made

Fixes #689

Details

In common, we mainly parse the response body, but since we might get an empty body with different requests, we are returning undefined for the body else parse as expected

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• Code generation (copilot but not intellisense)
• Learning or fact checking
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• Optimisation / refactoring
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• I have not used AI

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Review Checklist

Before merging, the reviewer should check the following items:

• Does the PR do what it claims to do?
• If this is a new adaptor, added the adaptor on marketing website ?
• Are there any unit tests?
• Is there a changeset associated with this PR? Should there be? Note that
  dev only changes don't need a changeset.
• Have you ticked a box under AI Usage?

[josephjclark]

Hi @hunterachieng, can you update the PR description please? You need to:

• Include a brief description of the fix
• update the AI disclaimer
• remove any template sections that aren't relevant to this PR

[josephjclark]

Almost there - just a couple of comments left to address. It's worth getting this right: change to common can affect every other adaptor, so getting it right now will save us problems in other adaptors in the future (if we'd done this right in the first place, you wouldn't be having to do this at all!)

[josephjclark]

Hi @mtuchi - can you run pnpm changeset version on this PR, push the diffs, and merge? Hunter is blocked by it.

Remember we don't have to push tags any more :) Just push the version bumps and merge to release. Don't worry about the warnings when you version.

Thanks! I'll be online around 10am GMT if there are any problems. You'll be online way before me and can unblock Hunter quicker 🙏