FIR: Refine visibility check for class members

compiler/testData/diagnostics/tests/visibility/privateCompanionInSuperClass.kt

@@ -0,0 +1,24 @@
+// SKIP_TXT
+open class BaseWithPrivate {
+    private companion object {
+        val X: Int = 1
+        val Y: Int = 1
+    }
+}
+
+open class Base {
+    companion object {
+        val X: String = ""
+    }
+}
+
+class Derived : Base() {
+    fun foo() {
+        object : BaseWithPrivate() {
+            fun bar() {
+                X.length
+                <!INVISIBLE_MEMBER!>Y<!>.hashCode()
+            }
+        }
+    }
+}