Correct rangeType for text, tooltip and x2/y2.
Correct rangeType for text, tooltip and x2/y2.

This makes `"nominal"` the default `type` for `text` and `tooltip`

Fix #2335

uwdata/vega-lite,vega/vega-lite,vega/vega-lite,uwdata/vega-lite,vega/vega-lite,vega/vega-lite,uwdata/vega-lite,uwdata/vega-lite,vega/vega-lite,uwdata/vega-lite