Firebase Database (${JSCORE_VERSION}) INTERNAL ASSERT FAILED: Unknown node type

### Version info

**Angular: 14**

**Firebase: 9.9.1**

**AngularFire: 7.4.1**

**Other (e.g. Ionic/Cordova, Node, browser, operating system):**

Node 16.13.0
macOS

### How to reproduce these conditions
#### Steps to set up and reproduce

When a local or production build is served, we have the below console error:
```
zone.js:1061 Unhandled Promise rejection: Firebase Database (${JSCORE_VERSION}) INTERNAL ASSERT FAILED: Unknown node type ; Zone: ; Task: setTimeout ; Value: Error: Firebase Database (${JSCORE_VERSION}) INTERNAL ASSERT FAILED: Unknown node type
```

Also, not sure if because above max call stack also showed:

```
polyfills.js:29650 Uncaught RangeError: Maximum call stack size exceeded
at ChildrenNode.isLeafNode (vendor.js:286427:13)
at ChildrenNode.equals (vendor.js:64135:22)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
at ChildrenNode.equals (vendor.js:64140:31)
```

#### Source code from tracing:
```
/**
* Returns an Error object suitable for throwing.
*/
const assertionError = function (message) {
return new Error('Firebase Database (' +
CONSTANTS.SDK_VERSION +
') INTERNAL ASSERT FAILED: ' +
message);
};
```

### Expected behavior
Build runs on both local and production without errors

### Actual behavior
Build runs on both local and production has errors

Start by reproducing the local and production builds with Angular 14, Firebase 9.9.1, AngularFire 7.4.1, and Node 16.13.0. Trace the Firebase Database assertionError source and the ChildrenNode.equals stack shown in the report. Done means both builds run without the unknown node type error or the maximum call stack exception.

Written by the indexing model from the issue text.