fix(alerts): cron picker alignment issues

[diegomedina248]

SUMMARY

Following the latest antd upgrade, the cron job picker in the alerts/report present some alignment issues in the selects. This PR addresses those.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before:

After:

TESTING INSTRUCTIONS

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[bot]]

Codecov Report

Merging #22274 (2ccaef8) into master (969c963) will increase coverage by 0.00%. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #22274   +/-   ##
=======================================
  Coverage   66.74%   66.74%           
=======================================
  Files        1841     1841           
  Lines       70220    70219    -1     
  Branches     7672     7671    -1     
=======================================
  Hits        46865    46865           
  Misses      21371    21371           
+ Partials     1984     1983    -1     

Flag	Coverage Δ
javascript	53.66% <ø> (+<0.01%)	:arrow_up:

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Impacted Files	Coverage Δ
...-frontend/src/components/CronPicker/CronPicker.tsx	100.00% <ø> (ø)
...packages/superset-ui-core/src/query/types/Query.ts	100.00% <0.00%> (ø)
...ges/superset-ui-core/src/query/buildQueryObject.ts	100.00% <0.00%> (ø)
...d/components/nativeFilters/FilterCard/ScopeRow.tsx	63.15% <0.00%> (+2.04%)	:arrow_up:
...Filters/FilterBar/FilterControls/FilterDivider.tsx	84.00% <0.00%> (+2.51%)	:arrow_up:

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[rusackas]

Merging, but it might be nice to follow up and add a gridUnit or so of space between the line-wrapped Select components. Let me know if I should file an Issue.