scrollTo does not work for initialised value

[lougreenwood]

When an lt-body is initialised with a value for @scrollTo, the table does not automatically scroll to this position.

Instead scrollTo only seems to work if a value is provided after the initial render.

I'm willing to take a look at fixing this, but I'm finding it hard to find the code where the scroll is actually registered for a scrollTo, so any pointers are welcome :)

[lougreenwood]

Ok, I think I've figured out the issue...

Because scrollTo is triggered when via didReceiveAttributes, the @scrollTo arg is processed before the table renders.

Additionally, because the implementation relies on a private _scrollTo property - where if this value matches the @scrollTo arg, the implication is that scroll was successful and should not be re-triggered. But the issue here is that this can be set before the table has even rendered, so the ember-scrollable was not able to perform the scroll.

It seems that generally a more robust system is needed to properly handle scroll, but for now I'm going to try and patch something so that scrollTo also works for first render