fix(databases): Display for credentials input

[Antonio-RiveroMartnez]

SUMMARY

• Since our DatabaseConnectionForm is wrapped in a AntD Form now, we need to ensure our custom design is applied in the upload input instead of AntD default one for file input type=file.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

BEFORE:

AFTER:

TESTING INSTRUCTIONS

1. Visit the "Databases" page, hit the "+database+ button
2. Select "Google Bigquery" db
3. Upload JSON file
4. Expected Result: The input field (UPLOAD CREDENTIALS) is hidden and only the button is visible.

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

[yousoph]

/testenv up

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[codecov]

Codecov Report

Merging #20637 (c91c564) into master (c91c564) will not change coverage.
The diff coverage is n/a.

❗ Current head c91c564 differs from pull request most recent head b8a6e34. Consider uploading reports for the commit b8a6e34 to get more accurate results

@@           Coverage Diff           @@
##           master   #20637   +/-   ##
=======================================
  Coverage   66.79%   66.79%           
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  Files        1753     1753           
  Lines       65618    65618           
  Branches     6952     6952           
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  Hits        43831    43831           
  Misses      20023    20023           
  Partials     1764     1764           

Flag	Coverage Δ
hive	53.88% <0.00%> (ø)
javascript	51.86% <0.00%> (ø)
mysql	82.36% <0.00%> (ø)
postgres	82.43% <0.00%> (ø)
presto	53.74% <0.00%> (ø)
python	82.87% <0.00%> (ø)
sqlite	82.22% <0.00%> (ø)
unit	50.79% <0.00%> (ø)

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[rusackas]

/testenv up

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