twin720

[Bug] The line is not displayed on the graph, for the SVG rendering mode

1

### Version 5.5.1 ### Link to Minimal Reproduction https://echarts.apache.org/examples/en/editor.html?renderer=svg&code=PYBwLglsB2AEC8sDeBYAULTsBEAPAgrhAM7YBcy6W1OYAniAKbk4DGAhmIwObABOdbABoqWAL4iMWbHUIkWqKTVoNmFbADd2AGwCuzSdQmjM2Yoz4RGpCgG0TNRcuUATTuzsPnWWwHJ82iAAFuy-QrAATAC6ht40fgHBoeEADDFecQmBIWGw0Lra2ulKcZhZSblpsaVl_tnJsACMxTU-dRWpLa2wfgBCfOwawLnN1TV-AMIhfNpWufmFXa1-ACKM2mANjWkZyktx2PRMLNiz0Aa7NGYAtsDAYEEsYHz6Y97YrDDnrGAAcgXaGywZ6vS5iBzFMQAbiAA ### Steps to Reproduce 1. Open [link example](https://echarts.apache.org/examples/en/editor.html?renderer=svg&code=PYBwLglsB2AEC8sDeBYAULTsBEAPAgrhAM7YBcy6W1OYAniAKbk4DGAhmIwObABOdbABoqWAL4iMWbHUIkWqKTVoNmFbADd2AGwCuzSdQmjM2Yoz4RGpCgG0TNRcuUATTuzsPnWWwHJ82iAAFuy-QrAATAC6ht40fgHBoeEADDFecQmBIWGw0Lra2ulKcZhZSblpsaVl_tnJsACMxTU-dRWpLa2wfgBCfOwawLnN1TV-AMIhfNpWufmFXa1-ACKM2mANjWkZyktx2PRMLNiz0Aa7NGYAtsDAYEEsYHz6Y97YrDDnrGAAcgXaGywZ6vS5iBzFMQAbiAA) or open [Offical Editor](https://echarts.apache.org/examples/en/editor.html?renderer=svg), select Render SVG  and type code: ``` option...