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

compiler/testData/diagnostics/tests/classObjects/ClassObjectVisibility.fir.kt

@@ -0,0 +1,30 @@
+package foo
+
+fun test() {
+  A.d
+  A.Companion.<!INAPPLICABLE_CANDIDATE!>f<!>
+  B.D
+  CCC
+  CCC.classObjectVar
+}
+
+class A() {
+  public companion object {
+    val d = 3
+    private object f {
+
+    }
+  }
+}
+
+class B {
+    class D {
+        private companion object
+    }
+}
+
+class CCC() {
+  private companion object {
+    val classObjectVar = 3
+  }
+}