Fixed tests for labels.

The bug was automatically fixed by previous commit.

compiler/testData/diagnostics/tests/functionLiterals/return/AutoLabels.kt

@@ -13,7 +13,7 @@ fun f() {
     foo {(): Int ->
         foo {
             (): Int ->
-            return@foo 1
+            return<!LABEL_NAME_CLASH!>@foo<!> 1
         }
         return@foo 1
     }

compiler/testData/diagnostics/tests/functionLiterals/return/AutoLabelsNonLocal.kt

@@ -2,9 +2,7 @@ fun f() {
     foo {(): Int ->
         bar {
             (): Int ->
-            // The actual error message should be "return not allowed",
-            // but due to a bug in label resolution it is "unresolved reference"
-            return<!UNRESOLVED_REFERENCE!>@foo<!> 1
+            <!RETURN_NOT_ALLOWED!>return@foo 1<!>
         }
         return@foo 1
     }