fix: disable browser autocomplete for DeleteModal

[nytai]

SUMMARY

See title and linked issue

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

TEST PLAN

• Ensure no browser autocomplete dropdown appears for the delete modal input

ADDITIONAL INFORMATION

• Has associated issue: Fixes [list view]user can delete items by typing 'delete'(lower case) in stead of DELETE  #11933
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

[codecov-io]

Codecov Report

Merging #12043 (a814759) into master (d5b16bc) will decrease coverage by 3.84%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #12043      +/-   ##
==========================================
- Coverage   67.71%   63.86%   -3.85%     
==========================================
  Files         952      952              
  Lines       46686    46689       +3     
  Branches     4577     4578       +1     
==========================================
- Hits        31615    29820    -1795     
- Misses      14958    16685    +1727     
- Partials      113      184      +71     

Flag	Coverage Δ
cypress	?
javascript	62.69% <ø> (+0.04%)	⬆️
python	64.58% <ø> (-0.02%)	⬇️

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

Impacted Files	Coverage Δ
superset-frontend/src/components/DeleteModal.tsx	100.00% <ø> (ø)
superset-frontend/src/SqlLab/App.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/explore/App.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/dashboard/App.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/setup/setupColors.js	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/chart/ChartContainer.jsx	0.00% <0.00%> (-100.00%)	⬇️
superset-frontend/src/explore/reducers/index.js	0.00% <0.00%> (-100.00%)	⬇️
...et-frontend/src/dashboard/containers/Dashboard.jsx	0.00% <0.00%> (-100.00%)	⬇️
...t-frontend/src/dashboard/containers/SliceAdder.jsx	0.00% <0.00%> (-100.00%)	⬇️
...-frontend/src/visualizations/presets/MainPreset.js	0.00% <0.00%> (-100.00%)	⬇️
... and 173 more

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