[Bug] Cannot get transformer working in electron browser

**Describe the bug**
*A clear and concise description of what the bug is.*

as described in the title

After debugging into the code, I found that the wrong runtime was selected which caused an `undefined` env property. This bug was also mentioned in issue #336.

https://github.com/xenova/transformers.js/blob/768a2e26d7f34746caa2b102f55dbd270c5d6f36/src/backends/onnx.js#L32

**How to reproduce**
*Steps or a minimal working example to reproduce the behavior*

**Expected behavior**
*A clear and concise description of what you expected to happen.*

**Logs/screenshots**
*If applicable, add logs/screenshots to help explain your problem.*

```
[transformerjs cannot electron browser
](env.js:60 Uncaught TypeError: Cannot read properties of undefined (reading 'wasm'))
```

**Environment**
- Transformers.js version:
- Browser (if applicable):
- Operating system (if applicable):
- Other:

**Additional context**
*Add any other context about the problem here.*

I removed the runtime env check condition in my local and then the transformer worked fine.