Alerts: Korean characters in default template misbehave

[susodapop]

Issue Summary

Alert titles that contain Korean or Japanese characters are badly encoded if the default alert email template is used. The custom alert templates do not appear so affected.

Steps to Reproduce

1. Make a query that returns logical data: SELECT 1 "foo";
2. Point an alert at this query that asserts foo == 2
3. Name the alert 숨 쉬는 법을 모르겠다
4. Save the alert and add your email as an alert destination
5. Trigger the query

You will receive an email with the following subject:

(TRIGGERED) b'\xec\x88\xa8 \xec\x89\xac\xeb\x8a\x94 \xeb\xb2\x95\xec\x9d\x84 \xeb\xaa\xa8\xeb\xa5\xb4\xea\xb2\xa0\xeb\x8b\xa4'

You can workaround this using the custom template. The custom template properly encodes Korean and Japanese characters.

Technical details:

• Redash Version: V9
• Browser/OS: FF
• How did you install Redash: SaaS

[susodapop]

Arik merged a fix in the SaaS repo. I'm closing this here so our customer service integration will surface the users affected on app.redash.io so I can follow up with them. I'll re-open afterward so that @arikfr can close it when the changes merge to master on this repo.