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

idea/testData/editor/optimizeImports/DefaultObjectReference.dependency.kt

@@ -1,13 +1,13 @@
 package d
 
 class A {
-    default object E {
+    companion object E {
         val c: Int
     }
 }
 
 class B {
-    default object F {
+    companion object F {
         val c: Int
     }
 }

idea/testData/editor/optimizeImports/Kt2709.kt

@@ -1,11 +1,11 @@
-import MyClass.Default.TEST
+import MyClass.Companion.TEST
 
 fun main() {
     TEST
 }
 
 class MyClass {
-    default object {
+    companion object {
         object TEST {}
     }
 }

idea/testData/editor/optimizeImports/Kt2709.kt.after

@@ -1,11 +1,11 @@
-import MyClass.Default.TEST
+import MyClass.Companion.TEST
 
 fun main() {
     TEST
 }
 
 class MyClass {
-    default object {
+    companion object {
         object TEST {}
     }
 }

idea/testData/editor/optimizeImports/MembersInScope.kt

@@ -13,7 +13,7 @@ class Outer {
         inner class Inner2
     }
 
-    default object {
+    companion object {
         class ClassObjectNested
     }
 

idea/testData/editor/optimizeImports/MembersInScope.kt.after

@@ -10,7 +10,7 @@ class Outer {
         inner class Inner2
     }
 
-    default object {
+    companion object {
         class ClassObjectNested
     }