[PER-10623] Add IANA timezone dropdown#1028

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PER-10623-add-IANA-timezone-dropdown

Commits on May 6, 2026

Commits on May 11, 2026

Integrate the EDTF service
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Commits on May 21, 2026

Refactor EDTF service and adjacent components to use date-fns
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Allow backspace until the end in date and time inputs
aasandei-vsp
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Commits on May 25, 2026

Replace hardcoded timezone list with IANA-backed TimezoneService
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