Stop using dashprivate props

[AnnMarieW]

We are using dashprivate props is several places. This should be replaced with context components because dashprivate may be removed at any time. More info in Dash pr 3066

Here's where we are currently using context

Here's where we are currently using dashprivate

Might want to wait on this one until the Plotly team has a recommended solution. There may be some new dash functions that will be easier than using context.