[explore][filter] IN filter select box will be loading forever when there is null value in the column

[jinghua-qa]

IN filter select box will be loading forever when there is null value in the column

How to reproduce the bug

use example data 'Covid Vaccine'

1. Go to explore, select chart type 'Big number'
2. add Metrics: count, add Filter: fda_approval_indicators (with all null value)
3. select 'IN' for filter type,
4. Observe filter value file and See error

Expected results

Able to show null for user to select

Actual results

loading forever

Screenshots

Environment

(please complete the following information):

• browser type and version:
• superset version: master
• python version: python --version
• node.js version: node -v
• any feature flags active:

Checklist

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

• 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.

[rusackas]

closed by #18171