Video component isn't open assetManager

I'm experiencing an issue where the video component does not open the asset manager immediately after dragging and dropping it onto the canvas. In contrast, when I drag and drop the image component, the asset manager opens automatically, allowing me to select an image from my media library.

在 GrapesJS 编辑器中复现视频组件的拖放流程，并将其与图像组件的行为进行比较。跟踪组件设置和与 asset manager 的交互；完成的标准是，将视频拖放到画布上后立即打开 asset manager 以选择媒体。

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