Release 2026w25

Safer invoice reversal validation plus fixes for documents on open-access matters and Profit & Loss drill-down dates.

• ↻ChangedBilling (MK2-8057): Invoice reversals validate journal lock dates before processing, preserving balances and ledger consistency when blocked.
• ✓FixedSystem (MK2-8114): PE Documents can be accessed and filed, including pre-bills, on matters configured for Open Access.
• ✓FixedReporting (MK2-8043): Profit & Loss drill-downs use the selected reporting period and reconcile with the displayed values.