[Bug] Wrong assertion when dragging a text node

### 🐞 Describe the Bug
Dragging text instead of an HTML element leads to an assertion error. See below in the reproduction.

### 🔬 Minimal Reproduction
Having this HTML:
```html
Some Text Some Link
```

Select everything, hover the text and try dragging it. There will be an assertion failure.

The problem is [here](https://github.com/emberjs/ember.js/blob/v5.5.0/packages/%40ember/-internals/views/lib/system/event_dispatcher.ts#L319). Perhaps the check `target instanceof Element` is overly restrictive.

### 😕 Actual Behavior
An assertion which is wrong.

### 🤔 Expected Behavior
No assertion.

### 🌍 Environment

- Ember: 5.5.0
- Node.js/npm: v21.4.0
- OS: Linux
- Browser: Chromium