[ML] Fix UI Actions context menu positioning for the Anomaly Swim Lane #71839
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Summary
#70705 has changed the logic of positioning the UI context menu, it relies on the element that has received a click event originally. But the anomaly swim lane was completely rerendered on cell selection, which caused unmounting the original element that received the click from the DOM tree. I've tried to resolve it with minimum changes by caching selection in the component state and checking it with
shouldComponentUpdate
lifecycle hook.Please bear in mind on the Anomaly Explorer page the swim lane still rerenders on the selection change, it happens because of the way state works.
Checklist