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

compiler/testData/diagnostics/tests/imports/PrivateClassReferencedError.fir.kt

@@ -0,0 +1,14 @@
+// FILE: File1.kt
+package pack1
+
+public class SomeClass {
+    private class N
+    public open class PublicNested
+}
+
+// FILE: Main.kt
+package a
+
+import pack1.SomeClass.*
+
+private class X : <!INAPPLICABLE_CANDIDATE!>N<!>()