Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  b12f67af9d352b7f8ab082d0e4c8aee517fab424

QA: Fix browser tests

Regression of Ib09becd59c8abda6ee28608c8a4645b23b94e087 which didn't
update the browser test with a change in functionality.

Change-Id: I3207b9b1a1862a7bd3d778292c818ddcc3bacb0a