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

compiler/testData/diagnostics/tests/regressions/kt9384.fir.kt

@@ -0,0 +1,11 @@
+fun main(args: Array<String>) {
+    fun f() = run {
+        private class C {
+            private fun foo() {
+                f().<!UNRESOLVED_REFERENCE!>foo<!>();
+
+            }
+        }
+        C()
+    }
+}