Missing call of SQL_QUERY_MUTATOR function

[nicob3y]

Bug description

I use the SQL_QUERY_MUTATOR mechanism and his execution is always required to query underlying database successfully.
At some point when rendering a chart into an embedded dashboard the method superset.connectors.sql.utils.get_columns_description is called and fails to query database because it does not apply the SQL_QUERY_MUTATOR.
As a result an error is diplayed.

How to reproduce the bug

Each time i render the chart or force refresh data

Screenshots/recordings

Superset version

3.1.1

Python version

3.9

Node version

16

Browser

Firefox

Additional context

SQL_QUERY_MUTATOR is defined in my config.py

Checklist

• I have searched Superset docs and Slack and didn't find a solution to my problem.
• 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.

[nicob3y]

#29885