report overload conflict of constructor and function

like this:

===
fun a() = 1

class a()
===

compiler/testData/checkerWithErrorTypes/quick/ConflictingOverloads.jet

@@ -65,3 +65,34 @@ namespace extensionAndRegular {
     
     fun Int.who() = 1
 }
+
+// constructor vs. fun overload
+
+namespace constructorVsFun {
+    class <!CONFLICTING_OVERLOADS!>a()<!> { }
+
+    <!CONFLICTING_OVERLOADS!>fun a()<!> = 1
+    
+    class Tram {
+        <!CONFLICTING_OVERLOADS!>fun f()<!> { }
+        
+        class <!CONFLICTING_OVERLOADS!>f()<!> { }
+    }
+    
+    class Yvayva {
+        class object {
+            <!CONFLICTING_OVERLOADS!>fun fghj()<!> { }
+            
+            class <!CONFLICTING_OVERLOADS!>fghj()<!> { }
+        }
+    }
+    
+    class Rtyu {
+        fun ololo() { }
+        
+        class object {
+            class ololo() { }
+        }
+    }
+}
+