feat: customizable start/end labels for range time input - #6325

[balajis-qb]

Summary

Fixes Hacker0x01#6280.

When selectsRange is combined with showTimeInput, the calendar renders two time inputs and hardcodes English (Start) / (End) suffixes onto timeInputLabel (calendar.tsx), with no way to override or translate them — a gap for non-English apps.

This adds two optional props:

Prop	Effect
timeInputStartLabel	When set, replaces the entire caption of the start time input
timeInputEndLabel	When set, replaces the entire caption of the end time input

When a prop is not set, the existing "<timeInputLabel> (Start)" / " (End)" behaviour is unchanged. Single (non-range) showTimeInput mode is unaffected.

<DatePicker
  selectsRange
  showTimeInput
  timeInputStartLabel="Startzeit"
  timeInputEndLabel="Endzeit"
  /* ... */
/>

Changes

• src/calendar.tsx — declare timeInputStartLabel / timeInputEndLabel on CalendarProps (they flow to DatePickerProps automatically); use them in renderInputTimeSection.
• src/test/datepicker_test.test.tsx — 6 tests: default suffixes, back-compat with timeInputLabel, full-caption replacement, precedence over timeInputLabel, per-side fallback, single-mode unaffected.
• docs-site/ — new "Input Time with Range (custom start/end labels)" example.

Screenshots

Default Mode

Override Lables

Contribution checklist

• I have followed the contributing guidelines.
• I have added sufficient test coverage for my changes.
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