Fix vertical layout crash for large day ranges

[bryankeller]

Details

I introduced a regression when I changed the intrinsic content size strategy here https://github.com/airbnb/HorizonCalendar/pull/250/files#diff-733b4844a228b4fda6b27e4f88b42a6fc4b04eb589081da658741416a2152bd9R1083

Since I started passing in a huge height, it will actually try to layout every single day in the calendar for a huge day range. This caused the Large Day Range demo in the example app to hang at 100% CPU usage, until Springboard killed it 💀

Related Issue

N/A

Motivation and Context

Whoops!

How Has This Been Tested

Example app

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.