Bug: Support for Symbol for `fromEvent`

[Lightning00Blade]

Describe the bug

Node Event Emitter supports Symbol for on/off https://nodejs.org/api/events.html#emitteroneventname-listener.
The current implementation of RxJS can use them as provided the example bellow it's just that the types that are used don't support them.

Expected behavior

Symbols are accepted as types.

Reproduction code

import { fromEvent } from 'rxjs';
import { EventEmitter } from 'node:events';

const emitter = new EventEmitter();
const protectedEvent = Symbol('Emitted');

// Fails  TypeChecking
const sourceOne = fromEvent(emitter, protectedEvent);
// Passes TypeChecking
const sourceTwo = fromEvent(emitter, protectedEvent as unknown as string);

sourceOne.subscribe((val) => console.log(val));
sourceTwo.subscribe((val) => console.log(val));

emitter.emit(protectedEvent, {
  message: 'Hello World',
});

Reproduction URL

No response

Version

7.8.1

Environment

Node: 20.3.1 (should work for 16 LTS and above)

Additional context

This useful so that you can have internal methods not exposed the the user of libary.