Add component and update license identifier for chmlib
Summary: Added missing component entry "system.utils" and change license identifier from old LGPL-2.1 to LGPL-or-later.
Test Plan: Rebuild package okular (which depends on chmlib) locally with updated revision. Tried various operations within Okular (opening PDF, searching, adding notes, highlighting text, adding bookmarks).
Reviewers: Triage Team, DataDrake
Reviewed By: Triage Team, DataDrake
Maniphest Tasks: T8747
Differential Revision: https://dev.getsol.us/D8861