fix: SHOW is not DML

[betodealmeida]

SUMMARY

This came up during the Trino podcast (https://www.twitch.tv/videos/936663396), a user couldn't run SHOW CATALOGS because they hadn't enabled DML in the database. It shouldn't be necessary.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TEST PLAN

Added tests.

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

[etr2460]

yeah, i think this is safe

[codecov]

Codecov Report

Merging #13464 (eb998a1) into master (0318b6d) will decrease coverage by 5.87%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master   #13464      +/-   ##
==========================================
- Coverage   77.36%   71.49%   -5.88%     
==========================================
  Files         906      804     -102     
  Lines       45699    40626    -5073     
  Branches     5522     4159    -1363     
==========================================
- Hits        35356    29045    -6311     
- Misses      10216    11581    +1365     
+ Partials      127        0     -127     

Flag	Coverage Δ
cypress	57.92% <ø> (-0.02%)	⬇️
hive	?
javascript	?
mysql	80.34% <100.00%> (+0.02%)	⬆️
postgres	80.38% <100.00%> (+0.02%)	⬆️
python	80.47% <100.00%> (-0.28%)	⬇️
sqlite	80.00% <100.00%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
superset/db_engine_specs/base.py	85.57% <100.00%> (-0.49%)	⬇️
...uperset-frontend/src/dashboard/util/dnd-reorder.js	0.00% <0.00%> (-100.00%)	⬇️
...rset-frontend/src/dashboard/util/getEmptyLayout.js	0.00% <0.00%> (-100.00%)	⬇️
...et-frontend/src/components/Pagination/Ellipsis.tsx	0.00% <0.00%> (-100.00%)	⬇️
...-frontend/src/components/OmniContainer/Omnibar.tsx	0.00% <0.00%> (-100.00%)	⬇️
...frontend/src/components/ErrorMessage/IssueCode.tsx	0.00% <0.00%> (-100.00%)	⬇️
...rc/components/ErrorMessage/TimeoutErrorMessage.tsx	0.00% <0.00%> (-100.00%)	⬇️
...dashboard/components/resizable/ResizableHandle.jsx	0.00% <0.00%> (-100.00%)	⬇️
...tersConfigModal/Footer/CancelConfirmationAlert.tsx	0.00% <0.00%> (-100.00%)	⬇️
...ConfigModal/FiltersConfigForm/FilterScope/state.ts	0.00% <0.00%> (-100.00%)	⬇️
... and 486 more

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