Fix tracked detection

[patricklx]

call getter directly
Ember.get auto tracks properties is seems, breaking the tracked detection.
So, it marks Getters as tracked, if the getter does not depend on any tracked property,

[RobbieTheWagner]

@pzuraq does this seem logical to you? I don't know about the internals.

[RobbieTheWagner]

@patricklx if this fixes a bug in tracked detection, would it be possible to add a test covering that bug, that would fail before and passes now?

[pzuraq]

get should never mark a getter as anything. It will install a mandatory getter/setter on plain properties, but it does nothing unusual to plain getters. Can you describe the failure you were seeing in a bit more detail?

[patricklx]

its not that get marks it, but it adds the property tag into the tracking tags.
But we try to detect a tracked by checking if metal.track returns the same which metal.tagForProperty returns.
Which happens when accessing getters through get. https://github.com/emberjs/ember.js/blob/master/packages/%40ember/-internals/metal/lib/property_get.ts#L110

[pzuraq]

Ah, ok, makes sense. I think this is fine for now 👍

[RobbieTheWagner]

If @pzuraq says it is fine, it seems fine to me 👍