[Bugfix] Booking Date Picker - First few dates are rendered fast, but later dates are all rendered in UI at once.

[hariombalhara]

Fixes: First few dates are rendered fast, but later dates are all rendered in UI at once. Now a day is rendered at once.
Performance Improvement: Even on a 6x slowdown now, the Date Picker experience is much better.

Motivation: On my mobile device, Date Picker was still unusable for many seconds when switching months.

Desktop Before

Desktop After

6x Slowdown Before

6x Slowdown After

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Performance Improvement

How should this be tested?

• Browse through months in date picker back and forth.

Checklist

• I haven't added tests that prove my fix is effective or that my feature works
• I haven't checked if new and existing unit tests pass locally with my changes

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docs – ./apps/docs

🔍 Inspect: https://vercel.com/cal/docs/BAeRf4rfcxyMhPdfdbkPXzo8vnuB
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calendso – ./apps/web

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✅ Preview: https://calendso-git-fork-hariombalhara-fix-progressive-rene-695502-cal.vercel.app

[baileypumfleet]

Nice fix! Looks good to me. Thank you very much for your contribution :)

[emrysal]

Nice iteration on your earlier contribution!