Should've been removed from these patches as part of the fix for
T251188 in 39448a9cf6
Bug: T264683
Change-Id: I49f3ba2bec87d4a701f1370b8c67eac9f58629a7
This is how it's named in WMF production and the Postgres. Converging
names would help us to keep everything consistent, for example if we
need to force this index in the code.
For changing this index in Sqlite, we don't need to make a temp table as
this only touches the index and not the table structure.
Bug: T250071
Change-Id: I0838753b809680af3ee06d9c4f6d21d95b8982cc