Polar barplots do not have reset zoom available

I'm creating polar barplots to visualize angular histograms. These plots do have a zoom option in the modebar, but not a resetScale or zoomout. So I can zoom in, but there is no way to zoom out again.

Trying to add these buttons explicitly doesn't work. The modebar_add function does not throw an error, but no buttons are added either.

import plotly.graph_objects as go
import numpy as np

fig = go.Figure()

bins = np.linspace(0,358,180)
arr = np.array(bins)

series = [90+20*np.random.normal() for _ in np.arange(100)]

count, division = np.histogram(series, bins=bins)

fig.add_trace(go.Barpolar(
    r=count,
    theta=series,
    width=1,
    marker_line_width=2,
    opacity=0.5,
    base=0
))

fig.update_layout(
    title='Polar histogram',
    width=1000,
    height=1000,
    template=None,
    polar = dict(
        angularaxis = dict(showticklabels=True,
                           ticks='',
                           ),
    ),
    modebar_add=['resetScale',
                 'zoomout'],
)


fig.show()

Start by running the supplied Python reproduction and inspect how modebar actions are exposed for polar barplots, especially resetScale and zoomout. Confirm the expected behavior for zooming and resetting, then add or update the relevant regression coverage so both buttons work for this plot type.