Fix type of callable reference to fake override

compiler/testData/diagnostics/tests/callableReference/function/fakeOverrideType.kt

@@ -0,0 +1,17 @@
+// !CHECK_TYPE
+
+import kotlin.reflect.KFunction2
+
+open class A {
+    fun foo(s: String): String = s
+}
+
+class B : A() {
+}
+
+
+fun test() {
+    B::foo checkType { _<KFunction2<B, String, String>>() }
+
+    (B::hashCode)(<!TYPE_MISMATCH!>"No."<!>)
+}

compiler/testData/diagnostics/tests/callableReference/function/fakeOverrideType.txt

@@ -0,0 +1,19 @@
+package
+
+public fun test(): kotlin.Unit
+
+public open class A {
+    public constructor A()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final fun foo(/*0*/ s: kotlin.String): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class B : A {
+    public constructor B()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final override /*1*/ /*fake_override*/ fun foo(/*0*/ s: kotlin.String): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}