SR-8467: Fixing crash on AnyFunctionType::getExtInfo #26424
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Resolves SR-8467.
The type of the expression is an error type
(closure_expr type='<<error type>>'on those cases.So, the
!Ty->getAs<AnyFunctionType>()->getExtInfo().isNoEscape()was assuming that it was always a FunctionType and crashing because of that.This fix was just to check if the type is actually a function type.
All the files on the SR ticket were added as tests.
cc @jrose-apple