[Bug] borderRadius not working for polar bars

[Ovilia]

Version

5.4.0

Link to Minimal Reproduction

https://echarts.apache.org/examples/zh/editor.html?c=bar-polar-label-radial&code=PYBwLglsB2AEC8sDeAoWsTADYEMBOAXMmurHjgCYQCuAzkQNoDMADADSwDkAHCwKScAuiQC-bEuSp0AggA8I9YqVgBbHLKIAWUePQ5oAcywBTOQqKplYAJ4hjRTgGMcYYweB5rnXaQoucjJw43lwARiFOERRCPui0YPhg0oYmRADsAKw6JGDA2JAgFmIktMZ4EMaKlqQ2dg6h-N4k6H4JjABMHACMAHSdsO09mhxMPQBsgrGwjnl4VNAuxgDK1vHGKg6YuHhNyhCuKks2qUrKsKEeFGUASpQ0il0szbAi2XrQEGqQMEQAZjhYUooEQAbiAA

Steps to Reproduce

Create a polar bar with itemStyle.borderRadius.

Current Behavior

No border radius.

Expected Behavior

It should have borderRadius like pie series.

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response