Other charts are overlapping with Table chart when downloading dashboard as image using "Download as Image" option

### Bug description

Other charts overlap with the Table chart when downloading the dashboard using the "Download as Image" option.

This issue occurs when:

* The dashboard contains multiple chart types (such as Table, Pie, Bar, etc.).
* The Table chart is positioned as the first chart in the dashboard.
* The Table chart contains scrollable content.

### Screenshots/recordings

Actual dashboard:

Image after download:

### Superset version

6.0.0

### Python version

3.11

### Node version

18 or greater

### Browser

Chrome

### Additional context

_No response_

### Checklist

- [x] I have searched Superset docs and Slack and didn't find a solution to my problem.
- [x] I have searched the GitHub issue tracker and didn't find a similar bug report.
- [ ] I have checked Superset's logs for errors and if I found a relevant Python stacktrace, I included it here as text in the "additional context" section.

Start at the dashboard's “Download as Image” entry point and reproduce the export with a scrollable Table chart placed first, alongside Pie and Bar charts, using Chrome. Done means the downloaded image preserves the dashboard layout without other charts overlapping the Table chart.

Written by the indexing model from the issue text.