fix hover for traces w/ colorbar w/ set ticktext tickvals
fix hover for traces w/ colorbar w/ set ticktext tickvals

- don't include point values of 1d array attributes
  when pointNumber is 2d in appendArrayPointValue.
- note that 1d array attributes (e.g. `x` and `y`) can still be
  set in the `module.hoverPoints`.

plotly/plotly.js,plotly/plotly.js,iongroup/plotly.js,etpinard/plotly.js,asolagmbh/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,etpinard/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,iongroup/plotly.js,aburato/plotly.js,plotly/plotly.js,etpinard/plotly.js,aburato/plotly.js