[Calendar] Setting the month makes storybook crash

[Diaan]

Provide a general summary of the issue here

When setting the month with the storybook control the whole page crashed because month?.toISOString is not a function

🤔 Expected Behavior?

Month changes to the month set

😯 Current Behavior

💁 Possible Solution

No response

🖥️ Steps to Reproduce

1. Go to https://storybook.sanomalearning.design/?path=/story/date-time-calendar--min-max
2. Open the controls
3. set "month", "min" or "max" to any value
4. Boom!

What browsers are you seeing the problem on? (only for bugs in code)

Chrome

If other, please specify.

No response

What operating system are you using?

MacOS

👤 Your name

Diana

🧢 Your product/team

SLDS

🎨 Your Theme(s)

Sanoma Learning