Companion objects have public visibility by default

#KT-7114 Fixed

compiler/testData/loadJava/compiledKotlin/classObject/ClassObjectDefaultVisibility.txt

@@ -3,15 +3,51 @@ package test
 internal final class Int {
     /*primary*/ public constructor Int()
 
-    internal companion object Companion {
+    public companion object Companion {
         /*primary*/ private constructor Companion()
     }
 }
 
+public final class Outer {
+    /*primary*/ public constructor Outer()
+
+    internal final class Int {
+        /*primary*/ public constructor Int()
+
+        public companion object Companion {
+            /*primary*/ private constructor Companion()
+        }
+    }
+
+    private final class Pri {
+        /*primary*/ public constructor Pri()
+
+        public companion object Companion {
+            /*primary*/ private constructor Companion()
+        }
+    }
+
+    protected final class Pro {
+        /*primary*/ public constructor Pro()
+
+        public companion object Companion {
+            /*primary*/ private constructor Companion()
+        }
+    }
+
+    public final class Pub {
+        /*primary*/ public constructor Pub()
+
+        public companion object Companion {
+            /*primary*/ private constructor Companion()
+        }
+    }
+}
+
 private final class Pri {
     /*primary*/ public constructor Pri()
 
-    private companion object Companion {
+    public companion object Companion {
         /*primary*/ private constructor Companion()
     }
 }