[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/testsWithStdLib/native/nonFunction.fir.kt

@@ -0,0 +1,9 @@
+external class A
+
+external val foo: Int = 23
+
+class B {
+    external class A
+
+    external val foo: Int = 23
+}