simplify condition

packages/block-editor/src/components/block-list/use-block-props/use-selected-block-event-handlers.js

@@ -76,23 +76,7 @@ export function useEventHandlers( { clientId, isSelected } ) {
 			 * @param {DragEvent} event Drag event.
 			 */
 			function onDragStart( event ) {
-				const { ownerDocument } = node;
-				const { defaultView } = ownerDocument;
-				const selection = defaultView.getSelection();
-				let { anchorNode, focusNode } = selection;
-				if ( anchorNode !== anchorNode.ELEMENT_NODE ) {
-					anchorNode = anchorNode.parentElement;
-				}
-				if ( focusNode !== focusNode.ELEMENT_NODE ) {
-					focusNode = focusNode.parentElement;
-				}
-				if (
-					node !== event.target ||
-					( node.contains( anchorNode ) &&
-						anchorNode.isContentEditable ) ||
-					( node.contains( focusNode ) &&
-						focusNode.isContentEditable )
-				) {
+				if ( node !== event.target || node.isContentEditable ) {
 					event.preventDefault();
 					return;
 				}
@@ -103,6 +87,9 @@ export function useEventHandlers( { clientId, isSelected } ) {
 				} );
 				event.dataTransfer.clearData();
 				event.dataTransfer.setData( 'wp-blocks', data );
+				const { ownerDocument } = node;
+				const { defaultView } = ownerDocument;
+				const selection = defaultView.getSelection();
 				selection.removeAllRanges();
 			}