Updated mediawiki/extensions
Project: mediawiki/extensions/VisualEditor  56ff25cb7cf5b620952e118e522c393738ba3f6b

Fix copy and paste of backwards selction

Was previously broken as getSlice was using ve.Range#equals to
compare ranges which is direction-sensitive.

Bug: 51538
Change-Id: Ib58d1d8fd11b62388c111a5da66171d13a9db9c2