IR: take care of supertypes when copying IrTypeParameters

compiler/testData/codegen/box/functions/localFunctions/boundTypeParameterInSupertype.kt

@@ -0,0 +1,21 @@
+interface I<TT> {
+    fun id(x: TT) = x
+}
+
+fun <T> forClass(x: T): T {
+    fun g(z: T): T {
+        class C : I<T>
+
+        return C().id(z)
+    }
+
+    return g(x)
+}
+
+fun <T> forTypeParameter(x: T): T {
+    fun <S : T> h(z: S) = z
+
+    return h(x)
+}
+
+fun box() = forClass("O") + forTypeParameter("K")