[Diagnostics] Use argument mismatch fix for @autoclosure result positions

`@autoclosure` is associated with a parameter, we use argument mismatch fix
to diagnose missing explicit calls as well as any mismatches in that position.

Resolves: rdar://110527062
(cherry picked from commit b3e9cf3)

Author: xedin

lib/Sema/CSSimplify.cpp

@@ -4282,7 +4282,8 @@ ConstraintSystem::matchExistentialTypes(Type type1, Type type2,
         if (!path.empty()) {
           auto last = path.back();
 
-          if (last.is<LocatorPathElt::ApplyArgToParam>()) {
+          if (last.is<LocatorPathElt::ApplyArgToParam>() ||
+              last.is<LocatorPathElt::AutoclosureResult>()) {
             auto proto = protoDecl->getDeclaredInterfaceType();
             // Impact is 2 here because there are two failures
             // 1 - missing conformance and 2 - incorrect argument type.

test/Constraints/closures.swift

@@ -1337,3 +1337,13 @@ func rdar143338891() {
     }
   }
 }
+
+do {
+  struct V {
+    init(value: @autoclosure @escaping () -> any Hashable) { }
+    init(other: @autoclosure @escaping () -> String) { }
+  }
+
+  let _ = V(value: { [Int]() }) // expected-error {{add () to forward '@autoclosure' parameter}} {{31-31=()}}
+  let _ = V(other: { [Int]() }) // expected-error {{cannot convert value of type '[Int]' to closure result type 'String'}}
+}