RemoveModifierFix: fix message for 'companion object'

#KT-35604 Fixed

idea/testData/quickfix/modifiers/openCompanionObject.kt

@@ -0,0 +1,6 @@
+// "Make 'companion object' not open" "true"
+class A {
+    <caret>open companion object {
+        fun a(): Int = 1
+    }
+}

idea/testData/quickfix/modifiers/openCompanionObject.kt.after

@@ -0,0 +1,6 @@
+// "Make 'companion object' not open" "true"
+class A {
+    companion object {
+        fun a(): Int = 1
+    }
+}

idea/testData/quickfix/modifiers/openCompanionObject2.kt

@@ -0,0 +1,6 @@
+// "Make 'Foo' not open" "true"
+class A {
+    <caret>open companion object Foo {
+        fun a(): Int = 1
+    }
+}

idea/testData/quickfix/modifiers/openCompanionObject2.kt.after

@@ -0,0 +1,6 @@
+// "Make 'Foo' not open" "true"
+class A {
+    companion object Foo {
+        fun a(): Int = 1
+    }
+}

idea/testData/quickfix/modifiers/openObject.kt

@@ -0,0 +1,4 @@
+// "Make 'Foo' not open" "true"
+<caret>open object Foo {
+    fun a(): Int = 1
+}

idea/testData/quickfix/modifiers/openObject.kt.after

@@ -0,0 +1,4 @@
+// "Make 'Foo' not open" "true"
+object Foo {
+    fun a(): Int = 1
+}