Make opaque type refinements of inline proxy objects abstract type constructors #20903
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Change the rhs of the added refinements from
TypeAlias
es toRealTypeBounds
s.This allows the opaque types to remain abstract type constructors, which is necessary for the
MatchTypeCasePattern.AbstractTypeConstructor
logic.In particular, an AppliedType where the tycon was a reference to the refinement, used to dealias before proceeding with the comparison of the tycons, which is a requirement of the aforementioned
AbstractTypeConstructor
case of the MatchReducer.Fixes #20427
Alternative to #20457