fix: Spacing in alert modal

[lyndsiWilliams]

SUMMARY

This PR fixes the spacing in the alert modal. The control labels and the "Ignore cache when generating a screenshot" checkbox got a 4px top margin and the Notification Method dropdown had its left margin spacing removed.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

BEFORE:

AFTER:

TESTING INSTRUCTIONS

• Go to the Alerts & reports page and click the "+ ALERT" button
• Observe the spacing between elements

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 #22709 (74433c1) into master (2de19f1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #22709   +/-   ##
=======================================
  Coverage   67.09%   67.09%           
=======================================
  Files        1869     1869           
  Lines       71605    71608    +3     
  Branches     7821     7821           
=======================================
+ Hits        48043    48046    +3     
  Misses      21534    21534           
  Partials     2028     2028           

Flag	Coverage Δ
hive	52.59% <ø> (ø)
javascript	53.90% <100.00%> (+<0.01%)	⬆️
mysql	78.03% <ø> (ø)
postgres	78.10% <ø> (ø)
presto	52.48% <ø> (ø)
python	81.34% <ø> (ø)
sqlite	76.48% <ø> (ø)
unit	51.49% <ø> (ø)

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

Impacted Files	Coverage Δ
...frontend/src/views/CRUD/alert/AlertReportModal.tsx	53.44% <100.00%> (+0.38%)	⬆️

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[eschutho]

nice!