Firebase Crashlytics - Cannot use dynamic params for declaring appId

### Related issues

I couldn't find any related issues.

### Version info

**node:** 20

**firebase-functions:** 5.0.0

**firebase-tools:** 13.15.2

### Test case

```typescript

import {defineString} from "firebase-functions/params";
import {onVelocityAlertPublished} from "firebase-functions/v2/alerts/crashlytics";
import {logger} from "firebase-functions";

const APP_ID = defineString('APP_ID');

export const detectVelocityAlert = onVelocityAlertPublished({
appId: APP_ID,
}, async (event) => {
logger.log("New velocity alert spotted!");
});
```

### Steps to reproduce

1. Create a Cloud Function using onVelocityAlertPublished.
2. Define the appId using defineString('APP_ID') from firebase-functions/params.
3. Attempt to deploy or run the function.

### Expected behavior

I expect the function to accept a parameter defined via defineString('APP_ID') for the appId in the onVelocityAlertPublished function configuration.

### Actual behavior

When I try to use defineString('APP_ID') to set the appId, the function fails to deploy because it appears to only accept a string literal, not a StringParams.

### Were you able to successfully deploy your functions?

No, the deployment fails.