Generate proper visibility for companion object instance field in LV1.3+

compiler/testData/codegen/bytecodeListing/invisibleCompanionObject_lv12.kt

@@ -0,0 +1,13 @@
+// LANGUAGE_VERSION: 1.2
+
+class TestPrivateCompanion {
+    private companion object Test
+}
+
+open class TestProtectedCompanion {
+    protected companion object Test
+}
+
+class TestInternalCompanion {
+    internal companion object Test
+}