No tooltip, no hover panel, still `hover_line_color` is ok in multiline plot

Community Support
2

@foice

See this bokeh discourse topic, which mentions a bug in hover tooltips for multi-lines with Bokeh 2.2.x.

https://discourse.bokeh.org/t/multi-line-tooltips-not-working-in-bokeh-version-2-2-1/6419/2