QuickPIM++ v2.18.12

Extension lifecycle and approval\n\n- Preserve Microsoft approval-required extension states instead of reporting them as already scheduled.\n- Prevent duplicate extension requests while approval or scheduling is already in progress.\n- Show approval-aware wording in Activity and desktop notifications, including approved, denied, failed, and canceled outcomes.\n- Keep expiry reminders informational while an extension is awaiting approval or already scheduled.\n- Reconcile active-role rows at the Microsoft end time and refresh only the affected role source.\n- Fix duplicate Microsoft Edge notification actions and clear the original reminder after an action.\n- Release stale extension locks when Microsoft never exposes an accepted continuation, while keeping real pending approvals protected.\n\nFull changelog: v2.18.10...v2.18.12