fixed some issues

[shubhsahu066]

Summary by Sourcery

Validate event times and enforce title length limits across notices and calendar events while improving mobile drawer/modal behavior.

New Features:

• Add client- and server-side validation to prevent event end times from preceding start times.
• Limit event and notice titles to 50 characters with corresponding form constraints and schema updates.
• Introduce a useHistoryBack hook to intercept browser back navigation for closing drawers and modals on mobile.

Bug Fixes:

• Avoid creating events from notices with invalid or pre-1970 timestamps and fall back to reasonable defaults for invalid end times.
• Prevent isoToDatetimeLocal from returning invalid values for malformed or pre-1970 dates.

Enhancements:

• Refine notice form payload mapping to align field names with backend expectations.
• Trigger calendar form validation when date and time fields change to keep recurrence and end-date rules in sync.

[sourcery-ai]

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