[BUG]: No click events in polar charts if drag mode is not zoom

Description

When the drag mode is not set to zoom for polar charts the click events stop emitting entirely

Screenshots/Video

I have recreated the issue here in codepen

https://codepen.io/hcrocker/pen/RNrdYOM

Steps to reproduce

1. with dragmode set to "pan" and clickmode set to "event" in the layout
2. click anywhere on the polar chart
3. nothing happens (expected: should see alert from click event function)
4. with dragmode set to "zoom"
5. click anywhere on the polar chart
6. you can see the alert from the click event function

Notes

issue にリンクされた CodePen の再現から始め、clickmode="event" を指定した dragmode="pan" における極座標チャートのインタラクション経路を追跡します。極座標チャートをクリックすると click event が発生し、dragmode="zoom" の場合の既存の動作が維持されれば完了です。