Prohibit return type mismatch for delegation members

#KT-13952 Fixed
 #KT-13005 Fixed

compiler/testData/diagnostics/tests/delegation/covariantOverrides/fromClass.kt

@@ -0,0 +1,19 @@
+interface IBase1 {
+    fun foo(): Any
+}
+
+open class IDerived1 : IBase1 {
+    override fun foo(): String = "1"
+}
+
+<!RETURN_TYPE_MISMATCH_BY_DELEGATION!>class Broken1<!>(val b: IBase1) : IBase1 by b, IDerived1()
+
+interface IBase2 {
+    val foo: Any
+}
+
+open class IDerived2 : IBase2 {
+    override val foo: String = "2"
+}
+
+<!PROPERTY_TYPE_MISMATCH_BY_DELEGATION!>class Broken2<!>(val b: IBase2) : IBase2 by b, IDerived2()