fix: optional list arg is causing ui launch form to white screen

[ursucarina]

TL;DR

fixes launch form crash on collection of ints

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

How did you fix the bug, make the feature etc. Link to any design docs etc

Tracking Issue

flyteorg/flyte#4033

[codecov]

Codecov Report

Patch coverage: 36.36% and project coverage change: -0.02% ⚠️

Comparison is base (a4348d8) 63.36% compared to head (0407cda) 63.34%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #817      +/-   ##
==========================================
- Coverage   63.36%   63.34%   -0.02%     
==========================================
  Files         527      527              
  Lines       13396    13401       +5     
  Branches     2550     2555       +5     
==========================================
+ Hits         8488     8489       +1     
- Misses       4908     4912       +4     

Files Changed	Coverage Δ
...nents/Launch/LaunchForm/inputHelpers/collection.ts	50.76% <14.28%> (-4.07%)	⬇️
...mponents/Launch/LaunchForm/inputHelpers/integer.ts	92.00% <75.00%> (+0.69%)	⬆️

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[flyte-bot]

🎉 This PR is included in version 1.9.6 🎉

The release is available on GitHub release

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