Values in legend not shown when rendering picture from chart

[TicoM1]

When generating a picture from an e-chart, that shows the current values of variables in the legend, the picture will not show these values.

To Reproduce

1. Create an echarts chart with values shown in the legend. The preview in echarts as well as (jar)vis will show the values in the legend.
2. Render a picture and for example send it via Telegram to display it

sendTo('echarts.0', {
        preset:   'echarts.0.chartWithValuesName',
        renderer: 'jpg',
        quality: 0.5,
        fileOnDisk: '/opt/iobroker/iobroker-data/echarts-temp-photo.jpg'
    }, result => {
        if (result.error) {
            sendTo("telegram.0", "send", { text: result.error });
        } else {
            sendTo("telegram.0", "send", { text: '/opt/iobroker/iobroker-data/echarts-temp-photo.jpg'  });
        }
    }

Expected behavior
Picture looks the same as the chart.

Versions:

• Adapter version: 1.9.2
• JS-Controller version: 7.0.3
• Node version: 20.18.0
• Operating system: linux