Calendar: fix wrong date when using keyboard nav and UTC timezone

[RasmusKjeldgaard]

Which issue does this PR close?

This PR closes #3743

What is the new behavior?

We normalize the date before setting focussed date, to ensure that timezone difference between local and utc time does not affect focussed day.

Does this PR introduce a breaking change?

• Yes
• No

Checklist:

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[Fuzzy3]

Fun stuff - simple solution ❤️