Qwik builder dev tools - option to change the env var check

**Describe the bug**
We want to get away from build-time environment variables in our Qwik apps (`PUBLIC_` .env vars) so that we're able to build once and deploy for many environments. When you remove `PUBLIC_BUILDER_API_KEY` then the builder dev tools prompts you to connect to a builder space when the application is ran. Ideally there would be an option to disable this when adding the dev tools plugin to vite.

**To Reproduce**
Steps to reproduce the behavior:
1. Have a Qwik app with the builder dev tools added
2. Remove `PUBLIC_BUILDER_API_KEY` from .env
3. Run the site and you're prompted to connect to a space

**Expected behavior**
If the key is needed by the dev tools, then perhaps being able to give it a different env var name when adding the plugin to vite could work? Something like `builderDevTools({ apiKeyVar: 'BUILDER_API_KEY' })`