Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  e589847291a842ce2da3a2d22485513b7a863c48

EditorApi: Check for sections

Don't try to access an undefined object.

Add tests for it.

Bug: 72521
Change-Id: I8b88bda22e2219cf65233fd6f0a6ee15444fac3d