Add To Dashboard Modal dropdown is hidden

[eugeniamz]

When Saving a Chart the option to ADD TO DASHBOARD is hidden.

Expected results

To show the dropdown list.

Actual results

Shows only 1 dashboard and need to use scroll bar to see more

Screenshots

In an instance with many dashboards available

1. Go to any chart
2. Click on save
3. Scroll down to ADD TO DASHBOARD
4. See error

Environment

• superset version: 01/13/2021 release

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• [x ] I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Add any other context about the problem here.

[junlincc]

this is issue is duplicate of #12469
and had been address in another PR.
@eugeniamz could we double check the issue page before adding the "rush!" label? 🙏

[junlincc]

@eugeniamz removing "rush!" and closing issue