H5 safari drag fix#1549
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* fix gridstack#1540 * DragEvent is not defined on Safari (regular MouseEvent + dataTransfer field) so fixed initEvent() to not use `instanceof DragEvent` but copy fields * according to spec (and required by Safari) the drag image has to be visible in the browser (in dom and not hidden) so make it a 1px div (this also helps chrome not showing a no-drop target cursor on Mac) * more DD code cleanup
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Description
so fixed initEvent() to not use
instanceof DragEventbut copy fieldsthe browser (in dom and not hidden) so make it a 1px div
(this also helps chrome not showing a no-drop target cursor on Mac)
Checklist
yarn test)