fix: Dropping blocks above editor (#945)

* WIP fix for formatting toolbar appearing on drop

* Re-added focus event handling for formatting toolbar

* Removed focus handler

* Restricted mouse y-coord to editor bounding box during drag & drop

* Removed blur listener from #944

Author: matthewlipski

packages/core/src/extensions/SideMenu/SideMenuPlugin.ts

@@ -441,8 +441,15 @@ export class SideMenuView<
       const editorBoundingBox = (
         this.pmView.dom.firstChild! as HTMLElement
       ).getBoundingClientRect();
-      evt.clientX = editorBoundingBox.left + editorBoundingBox.width / 2;
-      evt.clientY = event.clientY;
+      evt.clientX =
+        event.clientX < editorBoundingBox.left ||
+        event.clientX > editorBoundingBox.left + editorBoundingBox.width
+          ? editorBoundingBox.left + editorBoundingBox.width / 2
+          : event.clientX;
+      evt.clientY = Math.min(
+        Math.max(event.clientY, editorBoundingBox.top),
+        editorBoundingBox.top + editorBoundingBox.height
+      );
       evt.dataTransfer = event.dataTransfer;
       evt.preventDefault = () => event.preventDefault();
       evt.synthetic = true; // prevent recursion