moment.fn.toHijri now passes new Date(Date.UTC(this.year(), this.month(), this.date()))
to hijri-core instead of the raw instant (this.toDate()). This converts the calendar
date the moment instance displays, respecting utc() mode, rather than the underlying
millisecond value — eliminating wrong-Hijri-day results around UTC-midnight for hosts
east or west of UTC.
Lock-step with hijri-core fix/utc-day-boundary (commit 3419378). fromHijri path
was already correct; its comment updated for clarity.
Moment.js plugin adding Hijri calendar support via hijri-core. Adds
toHijri(), fromHijri(), hijriYear/Month/Day(), isValidHijri(), and
formatHijri() to all Moment instances via fn prototype and module
augmentation. Format token escaping wraps substituted values in
moment bracket syntax [...] to prevent re-interpretation. UTC-midnight
date shift corrected by using getUTC* components + moment([y, m, d])
construction. 14 ESM + 8 CJS tests passing. Dual CJS/ESM build.
