swift

b4c4c8f3 - [sema] Eagerly compute isolation in ActorReferenceResult::Builder constructor

[sema] Eagerly compute isolation in ActorReferenceResult::Builder constructor Move the computation of declIsolation and contextIsolation from build() into the Builder constructor. This changes these fields from optionals (knownDeclIsolation, knownContextIsolation) to pre-computed values, simplifying the build() method. NFC.