[Bug] Range Bands lines don't apply Bezier smoothing

[owl70]

1. Is it related to Long Term Statistics (LTS)?

No

1a. If it is related to Long Term Statistics (LTS) then please attach your CSV file(s) of entities

I did

2. Your YAML Code

type: custom:statistics-graph-chart-card
hours_to_show: 96
group_by: date
entities:
  - entity: sensor.weather_station_outdoor_module_temperature
    show_range_band: true
    smooth: true

3. Bug Description

When using range bands, the bezier smoothing is not applied to the range band lines.

I think this worked in earlier versions, like v2.19 or so.