Update styling of date picker and calendar

[origami-z]

3530

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Name	Status	Preview	Comments	Updated (UTC)
saltdesignsystem	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 4, 2024 8:41am

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🦋 Changeset detected

Latest commit: 3905346aeba3346315c373620743596d292a4132

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------------ | ----- | | @salt-ds/lab | Minor |

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[ivan-calderon]

All looking good @origami-z. Thanks! — Design review link.