Binding an observable that is inside an object property

[danbord]

Describe the problem

I'm using rxjs observables that are inside a class property. I'd like to use it in the display like that:

Here "counterObject" is my class object and "count" is an Observable<number>

<span>{$counterObject.count}</span>

That gives me a compile error because counterObject is not a store.

Describe the proposed solution

allow something like that:

{$(counterObject.count)}

Alternatives considered

{counterObject.$count}
{$counterObject.count}

Importance

would make my life easier

[Conduitry]

Duplicate of #4079.