Fix intersection type handling in PSI2IR

compiler/testData/codegen/box/traits/receiverOfIntersectionType.kt

@@ -0,0 +1,20 @@
+interface K
+
+interface I : K {
+    fun ff(): String
+}
+
+interface J : K {}
+
+class A: I, J {
+    override fun ff() = "OK"
+}
+
+class B: I, J {
+    override fun ff() = "Irrelevant"
+}
+
+fun box(): String {
+    val v = if (true) A() else B()
+    return v.ff()
+}