fix: Change 500 error to 422 in Sql Lab

[AAfghahi]

SUMMARY

The stop query function is currently only enabled for certain databases and not others. Currently we are sending a 500 Error when a user hits the stop query button. This PR changes that to a 422 while we enable the feature for all databases.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

Run a query in Athena (or anything not postgres or mysql)
hit the stop query button
check network tab.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #17292 (e5e301c) into master (faf7c74) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #17292      +/-   ##
==========================================
+ Coverage   76.96%   76.97%   +0.01%     
==========================================
  Files        1037     1037              
  Lines       55606    55616      +10     
  Branches     7588     7588              
==========================================
+ Hits        42796    42811      +15     
+ Misses      12560    12555       -5     
  Partials      250      250              

Flag	Coverage Δ
hive	81.55% <100.00%> (+0.02%)	⬆️
mysql	81.97% <100.00%> (+0.02%)	⬆️
postgres	81.98% <100.00%> (+0.02%)	⬆️
presto	81.84% <100.00%> (+0.02%)	⬆️
python	82.48% <100.00%> (+0.02%)	⬆️
sqlite	81.66% <100.00%> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
superset/exceptions.py	91.26% <100.00%> (ø)
superset/views/core.py	76.95% <100.00%> (+0.01%)	⬆️
superset/connectors/sqla/models.py	87.39% <0.00%> (-0.08%)	⬇️
superset/cli.py	54.92% <0.00%> (+2.07%)	⬆️

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[hughhhh]

Can we get a test to verify this in python?

[AAfghahi]

@hughhhh 100% I was going to do that when I got back :)

[eschutho]

/testenv up

[github-actions]

@eschutho Ephemeral environment spinning up at http://54.245.154.1:8080. Credentials are admin/admin. Please allow several minutes for bootstrapping and startup.

[eschutho]

There are no existing tests for the api endpoint so @AAfghahi will fast follow with a new test in a separate PR

[eschutho]

I tested it on the ephemeral and got the expected results.

[github-actions]

Ephemeral environment shutdown and build artifacts deleted.