The Modebar button " Compare data on hover" not showing up

```
Julia 1.6.3
PlotlyJS 0.18.8
Plots 1.22.4

```

Why the modebar button ``` Compare data on hover ``` is not available in PlotlyJS ?

```julia

using PlotlyJS

t = range(0, 2π, length = 100)

p1 = scatter(x=t, y=cos.(t))
p2 = scatter(x=t, y=sin.(t))
p3 = scatter(x=t, y=sin.(3*t))

plot([p1,p2,p3],
config=PlotConfig(
displayModeBar=true,
modeBarButtonsToAdd=[
"hoverCompareCartesian",
"toggleSpikelines",
"drawline" ] ) )
```

It seems that the [config](https://plotly.com/julia/configuration-options/) does not trigger some of the widgets.

The feature by default is available in Plotly backends, compare :

```julia
using Plots
plotlyjs()

xs = range(0, 2π, length = 100)
data = [sin.(xs) cos.(xs) 2sin.(xs) 2cos.(xs)]

plot(xs,data)

```


This is an important feature. Please guide how to include it in PlotlyJS.