Prevent scrolling to nodes on scroll (#77)

* Check that a focused node is not already focused before running .focus() on the underlying DOM element
* use preventScroll to avoid scrolling on mount

Author: wrobbinz

packages/react-arborist/src/components/row-container.tsx

@@ -2,7 +2,6 @@ import React, { useCallback, useEffect, useMemo, useRef } from "react";
 import { useDataUpdates, useNodesContext, useTreeApi } from "../context";
 import { useDragHook } from "../dnd/drag-hook";
 import { useDropHook } from "../dnd/drop-hook";
-import { IdObj } from "../types/utils";
 import { useFreshNode } from "../hooks/use-fresh-node";
 
 type Props = {
@@ -68,7 +67,7 @@ export const RowContainer = React.memo(function RowContainer<T>({
 
   useEffect(() => {
     if (!node.isEditing && node.isFocused) {
-      el.current?.focus();
+      el.current?.focus({ preventScroll: true });
     }
   }, [node.isEditing, node.isFocused, el.current]);