'Unexpected property "uniqueKey", or property value type of "object" is incorrect.' error on views since 3.0.7

[neerajmorar]

Prior to 3.0.7, uniqueKey was allowed on views (as recently as 3.0.0). However, installing 3.0.7 throws the above error 'Unexpected property "uniqueKey", or property value type of "object" is incorrect.'

According to the new proto, this feature was removed for views but it's now breaking massive portions of our pipelines Dataform Protocol Doc.

I believe this should still remain a feature of views.