JVM_IR KT-50076 avoid CHECKCAST on moved dispatch receiver parameter

compiler/testData/codegen/bytecodeText/checkcast/noCheckcastOnDelegatingDefaultImplsCall.kt

@@ -0,0 +1,24 @@
+interface Z {
+    fun testFun() : String {
+        return privateFun()
+    }
+
+    fun testProperty() : String {
+        return privateProp
+    }
+
+    private fun privateFun(): String {
+        return "O"
+    }
+
+    private val privateProp: String
+        get() = "K"
+}
+
+object Z2 : Z
+
+fun box() : String {
+    return Z2.testFun() + Z2.testProperty()
+}
+
+// 0 CHECKCAST

compiler/testData/codegen/bytecodeText/checkcast/noCheckcastOnSuper.kt

@@ -0,0 +1,9 @@
+interface Tr {
+    fun extra(): String = "e"
+}
+
+class N : Tr {
+    override fun extra(): String = super.extra()
+}
+
+// 0 CHECKCAST