fix(translation): complete portuguese(brazilian) translation

[ghost]

SUMMARY

Complete Portuguese (Brazilian) Translation, Checked with Poedit (No errors)

TESTING INSTRUCTIONS

files: messages.po and messages.json modified
superset/superset/translations/pt_BR/LC_MESSAGES/
Choose the Brazilian flag
Test

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 #24181 (decd593) into master (455e23b) will increase coverage by 0.01%.
The diff coverage is 90.74%.

❗ Current head decd593 differs from pull request most recent head c6ef569. Consider uploading reports for the commit c6ef569 to get more accurate results

@@            Coverage Diff             @@
##           master   #24181      +/-   ##
==========================================
+ Coverage   68.27%   68.28%   +0.01%     
==========================================
  Files        1955     1955              
  Lines       75451    75493      +42     
  Branches     8215     8220       +5     
==========================================
+ Hits        51511    51553      +42     
+ Misses      21834    21833       -1     
- Partials     2106     2107       +1     

Flag	Coverage Δ
hive	53.34% <78.26%> (+0.02%)	⬆️
mysql	78.96% <78.26%> (+<0.01%)	⬆️
postgres	79.03% <78.26%> (+<0.01%)	⬆️
presto	53.27% <78.26%> (+0.02%)	⬆️
python	82.85% <91.30%> (+0.01%)	⬆️
sqlite	77.56% <78.26%> (+<0.01%)	⬆️
unit	53.38% <91.30%> (+0.05%)	⬆️

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

Impacted Files	Coverage Δ
...end/src/features/databases/DatabaseModal/index.tsx	43.63% <ø> (ø)
superset/charts/api.py	87.07% <ø> (+0.98%)	⬆️
superset/constants.py	100.00% <ø> (ø)
superset/datasets/schemas.py	97.48% <50.00%> (ø)
superset-frontend/src/views/CRUD/hooks.ts	53.14% <66.66%> (+0.19%)	⬆️
superset/databases/api.py	91.10% <76.92%> (-0.46%)	⬇️
...tend/src/components/Datasource/DatasourceModal.tsx	74.00% <100.00%> (+0.53%)	⬆️
superset-frontend/src/components/Select/Select.tsx	90.64% <100.00%> (+0.22%)	⬆️
superset/charts/schemas.py	99.37% <100.00%> (+<0.01%)	⬆️
superset/dashboards/schemas.py	99.03% <100.00%> (+<0.01%)	⬆️
... and 1 more

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[michael-s-molina]

LGTM