[6.1][PreCheckTarget] Consider UnresolvedSpecializeExpr a chain expression #77814
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Cherry-pick #77813 into
release/6.1
Explanation: Fix a regression caused by #76981.
UnresolvedSpecializeExpr
should be a part ofOptionalEvaluationExpr
. This change fixes theOptionalEvaluationExpr
regression. Also this makes unresolved member chain expressions have ability to contain specialized nested types.Scope: Expression type checker
Risk: Low. The change is simple and targeted
Testing: Added regression test cases
Issuee: rdar://140378864
Reviewer: Pavel Yaskevich (@xedin)