Media with a long filename breaks the UI when in a sidebar meta box

### Description of the bug

If the image selected via `Fieldmanager_Media` has a long enough filename, the preview container's width is extended. When the field is in the editor sidebar, it's extended width pushes the `edit` and `remove` buttons off the edge of the page.

While the `edit` button's functionality is duplicated in the preview image's click handler, the `remove` button is unreachable.

### Steps To Reproduce

1. Add a `Fieldmanager_Media` field within an editor sidebar meta box
2. Upload an image with a long name, such as `4d2ea1994d7ffa588d66a6c29a6a5fcew-c2623938235rd-w436_h236_r4_q80.jpg`
3. Use the `Fieldmanager_Media` field to select the newly-uploaded image
4. Observe the `edit` and `remove` buttons are pushed out of reach

### Additional Information

For now, I've fixed this by adding the following to my project
```css
.fm-file-detail h4 {
word-break: break-word;
}
```