[sqllab] Array output in sqllab displays Chinese characters as utf-8 codes

[michellethomas]

Returning an array of Chinese characters in sqllab shows up as an array of utf-8 codes. Returning the data as a string and not an array shows up fine. Downloading to CSV also has the same issue of showing up as utf-8 codes.

How to reproduce the bug

1. Run a query that returns an array of Chinese characters
2. Try to view it in sqllab

Expected results

Shows the characters correctly

Actual results

Shows utf8 characters, when you click on the data it shows a popup window that displays the characters correctly, but when you download it to csv it shows up incorrectly.

Environment

(please complete the following information):

• browser type and version:
• superset version: superset version
• 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.

[sonfire186]

UP!

[rusackas]

Closing this in favor of #19388 which has a bit more context on the issue. I tried to take a crack at fixing this, but didn't have much real luck.