Sunburst figures not aggregating custom_data for parents with >1 leaf

Consider the following Sunburst figure:

import pandas as pd
import plotly.express as px

data = [
    ["A", "1", 200.0, 20.0],
    ["A", "2", 100.0, 10.0],
    ["A", "3", 350.0, 35.0],
    ["B", "1", 500.0, 50.0],
    ["C", "1", 20.0, 2.0],
    ["C", "2", 50.0, 5.0],
]
columns = ["Category Group", "Category", "Value", "Additional Value"]
df = pd.DataFrame(data, columns=columns)

fig = px.sunburst(df, path=['Category Group', 'Category'], values='Value', custom_data=['Additional Value'])
fig.update_traces(textinfo="label+percent entry")
fig.update_traces(hovertemplate='<b>%{label}</b><br>Value: $%{value}<br>Additional Value: $%{customdata[0]}<br>')

Any parents with >1 leaf do not display the sum of their children for the custom_data field. This behavior is not in line with other fields such as value or color which correctly display the sum of their children

Reproduce the case with the provided pandas DataFrame and px.sunburst(..., custom_data=...). Trace how parent values are generated for custom_data versus value and color, starting at the px.sunburst entry point and the resulting figure trace. Done means parent customdata displays the sum of its leaf values, including groups A and C, while existing behavior is preserved.