Replace 'class object' with 'default object' in renderers and test data

Includes changes to decompiled text
Old syntax is used in builtins and project code for now

idea/testData/refactoring/move/kotlin/moveTopLevelDeclarations/misc/singletonsAndStatics/after/library/KtClass.kt

@@ -2,19 +2,19 @@ package library
 
 class KtClass {
     class Inner {
-        class object {
+        default object {
             fun foo(): Int = 1
         }
     }
 
-    class object {
+    default object {
         fun foo(): Int = 1
     }
 }
 
 object KtObject {
     class Inner {
-        class object {
+        default object {
             fun foo(): Int = 1
         }
     }

idea/testData/refactoring/move/kotlin/moveTopLevelDeclarations/misc/singletonsAndStatics/after/source/Foo.kt

@@ -3,7 +3,7 @@ package source
 import library.*
 
 class Bar {
-    class object {
+    default object {
         val c : Int
     }
 }

idea/testData/refactoring/move/kotlin/moveTopLevelDeclarations/misc/singletonsAndStatics/before/library/KtClass.kt

@@ -2,19 +2,19 @@ package library
 
 class KtClass {
     class Inner {
-        class object {
+        default object {
             fun foo(): Int = 1
         }
     }
 
-    class object {
+    default object {
         fun foo(): Int = 1
     }
 }
 
 object KtObject {
     class Inner {
-        class object {
+        default object {
             fun foo(): Int = 1
         }
     }

idea/testData/refactoring/move/kotlin/moveTopLevelDeclarations/misc/singletonsAndStatics/before/source/Foo.kt

@@ -21,7 +21,7 @@ class <caret>Foo {
 }
 
 class Bar {
-    class object {
+    default object {
         val c : Int
     }
 }