Show only value mappings on new Time Series panel

This merge TimeSeriesPanel: The new graph panel now supports y-axis value mapping by torkelo · Pull Request #30272 · grafana/grafana · GitHub resolves requests like this Grafana Graph Value to Text on X, Y-Axis?

But I had to create a bunch of blank value mappings (e.g. val=0.25, mapping=’’) to show only the 4 value mappings that I care about. This isn’t sustainable because as soon as the screen/panel size changes, the Y axes automatic labels change.

Will there be a toggle to only show explicit value mappings?