default -> companion: replace all mentions of default and default object

idea/testData/refactoring/rename/defaultObject/before/JavaUsage.java

@@ -3,6 +3,6 @@ class JavaUsage {
         System.out.println(Foo.CONST);
         Foo.s();
         Foo.Bar.f();
-        Foo foo = new Foo(); // not usage of default object
+        Foo foo = new Foo(); // not usage of companion object
     }
 }

idea/testData/refactoring/rename/defaultObject/before/toBeRenamed.kt

@@ -1,5 +1,5 @@
 class Foo {
-    default object Bar {
+    companion object Bar {
         fun f() {
         }