How to handle deprecation of the weather forecast attribute for Plotly card?

Configuration Frontend
5

Here’s what I’ve done

In configuration.yaml

template:
  - trigger:
      - platform: state
        entity_id:
          - weather.weather_channel
    action:
      - service: weather.get_forecasts
        data:
          type: hourly
        target:
          entity_id: weather.weather_channel
        response_variable: hourly
    sensor:
      - name: Weather Channel Forecast Hourly
        unique_id: weather_channel_forecast_hourly
        state: "{{ now() }}"
        attributes:
          forecast: "{{ hourly['weather.weather_channel'].forecast }}"

(note that since the get_forecasts service places the forecast under hourly > ‘weather.weather_channel’ which itself contains a period, I have to use square bracket indexing [ … ] instead of the dot (.) operator to access the forecast list. “hourly.weather.weather_channel.forecast” will not work)

In the chart card

- entity: sensor.weather_channel_forecast_hourly
    unit_of_measurement: °F
    filters:
      - fn: |-
          ({ meta, vars }) => ({
            xs: [...meta.forecast.map(({ datetime }) => new Date(datetime))],
            ys: [...meta.forecast.map(({ temperature }) => temperature)],
          })
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