KT-35897: change type for enum constructor for visibility

nj2k/testData/newJ2k/enum/implicitlyPrivateConstructorsEnum.java

@@ -0,0 +1,13 @@
+public enum JavaEnum {
+    A("a"), B;
+
+    JavaEnum(String x) {
+        this.x = x;
+    }
+
+    JavaEnum() {
+        this.x = "default";
+    }
+
+    protected String x;
+}

nj2k/testData/newJ2k/enum/implicitlyPrivateConstructorsEnum.kt

@@ -0,0 +1,13 @@
+enum class JavaEnum {
+    A("a"), B;
+
+    constructor(x: String) {
+        this.x = x
+    }
+
+    constructor() {
+        x = "default"
+    }
+
+    protected var x: String
+}