fix: check process is defined when using the proxy

[james-elicx]

This PR does the following:

• Checks process is not undefined when checking if the proxy should be enabled.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 0fc265b3878769fab9656ffd7ddfa6d53f496a8e

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

This PR includes changesets to release 1 package

| Name | Type | | ----------------- | ----- | | cf-bindings-proxy | Patch |

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[github-actions[bot]]

🧪 A prerelease is available for testing 🧪

You can install this latest build in your project with: ```sh npm install --save-dev https://prerelease-registry.ixion-labs.workers.dev/james-elicx/cf-bindings-proxy/runs/6718286485/npm-package-cf-bindings-proxy-44 ``` Or you can immediately run this with `npx`: ```sh npx https://prerelease-registry.ixion-labs.workers.dev/james-elicx/cf-bindings-proxy/runs/6718286485/npm-package-cf-bindings-proxy-44 ```