Enum element labels not suggested in unresolved dot completion inside multi-statement closure

[ahoppen]

The following new test case fails:

// RUN: %swift-ide-test -code-completion -source-filename %s -code-completion-token COMPLETE | %FileCheck %s

enum DragState {
  case dragging(translation: Int, predictedLocation: Int)
}

func pnChanged(_ action: () -> Void) {}

func foo() {
  var gestureViewState: DragState = .dragging(translation: 0, predictedLocation: 0)
  let longPressDrag = pnChanged {
    _ = 1
    gestureViewState = .dragging(translation: 0, #^COMPLETE^#predictedLocation: 0)
  }
}


// CHECK: Begin completions, 1 items
// CHECK-DAG: Pattern/Local/Flair[ArgLabels]:     {#predictedLocation: Int#}[#Int#];
// CHECK: End completion

Code completion works correctly when

• Discarding the result of unchanged
• Making the closure a single-statement closure

rdar://92603748

[ahoppen]

Fixed by #58636