fix: resolve an issue where linked data that cannot be dropped on was…

… not allowed to drop (#5175)

# Pull Request

## 📖 Description

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This change adds the linked data type corresponding to linked data that typically includes elements such as `<img />` and `<input />` which do not contain content to a list of items that now allow it to be dropped.

## 👩‍💻 Reviewer Notes

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Build and run Creator application and add an `img` element, and another container element such as `div`, then attempt to drag the `img` into the `div`. This should now be possible.

## 📑 Test Plan

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As part of the drag and drop core functionality, this is untestable in unit tests.

## ✅ Checklist

### General

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- [x] I have included a change request file using `$ yarn change`
- [ ] I have added tests for my changes.
- [x] I have tested my changes.
- [ ] I have updated the project documentation to reflect my changes.
- [x] I have read the [CONTRIBUTING](https://github.com/Microsoft/fast/blob/master/CONTRIBUTING.md) documentation and followed the [standards](https://www.fast.design/docs/community/code-of-conduct/#our-standards) for this project.

change/@microsoft-fast-tooling-react-b2a5da63-bda5-4b37-80c9-e6b2ecc5ed00.json

@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "allow linked data that has no default droppable location to drop onto other drop targets",
+  "packageName": "@microsoft/fast-tooling-react",
+  "email": "7559015+janechu@users.noreply.github.com",
+  "dependentChangeType": "patch"
+}

packages/tooling/fast-tooling-react/src/navigation/navigation-tree-item.tsx

@@ -222,7 +222,7 @@ export const DraggableNavigationTreeItem: React.FC<NavigationTreeItemProps> = ({
     });
     const dragSource: ConnectDragSource = drag[1];
     const drop: [{}, DragElementWrapper<any>] = useDrop({
-        accept: [DragDropItemType.linkedData],
+        accept: [DragDropItemType.linkedData, DragDropItemType.linkedDataUndroppable],
         hover(item: DragObjectWithType, monitor: DropTargetMonitor): void {
             /**
              * When the hovered element changes, reset the cached ref and