fix(plugin-block): add dragend event listener to block handle element (#2199)

Co-authored-by: hep4 <hep4@chinatelecom.cn>

Author: rainke

packages/plugins/plugin-block/src/block-service.ts

@@ -108,13 +108,15 @@ export class BlockService {
     dom.addEventListener('mousedown', this.#handleMouseDown)
     dom.addEventListener('mouseup', this.#handleMouseUp)
     dom.addEventListener('dragstart', this.#handleDragStart)
+    dom.addEventListener('dragend', this.#handleDragEnd)
   }
 
   /// Remove mouse event to the dom.
   removeEvent = (dom: HTMLElement) => {
     dom.removeEventListener('mousedown', this.#handleMouseDown)
     dom.removeEventListener('mouseup', this.#handleMouseUp)
     dom.removeEventListener('dragstart', this.#handleDragStart)
+    dom.removeEventListener('dragend', this.#handleDragEnd)
   }
 
   /// Unbind the notify function.
@@ -171,6 +173,13 @@ export class BlockService {
     }
   }
 
+  /// @internal
+  #handleDragEnd = () => {
+    if (this.#view) {
+      this.#dragEnd(this.#view)
+    }
+  }
+
   /// @internal
   keydownCallback = (view: EditorView) => {
     this.#hide()