Add workaround for drag and drop between frames #4800
Merged
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Identify the Bug or Feature request
Addresses #3679
Description of the Change
This reimplements the WebView drag-and-drop listeners. The behaviour is the same except that we do not cache the mime types and values of a drag operation, meaning we don't have to worry about invalidating the cache on all relevant frames when a drag ends.
I will also be opening a bug ticket with JavaFX so that we can rip this code back out once the underlying issue is fixed.
Possible Drawbacks
More code to maintain for something that's not our fault.
Documentation Notes
N/A
Release Notes
This change is