Fix issue with libpangocairo

Summary: Resolves T7968

Test Plan: Launch steam and confirm friends list and store load as expected

Reviewers: Triage Team, DataDrake

Reviewed By: Triage Team, DataDrake

Subscribers: DataDrake, sunnyflunk, kyrios123

Maniphest Tasks: T7968

Differential Revision: https://dev.getsol.us/D6283