Replace get() and set() to getValue() and setValue() (property delegates)

compiler/testData/codegen/boxWithStdlib/callableReference/property/delegatedMutable.kt

@@ -3,11 +3,11 @@ var result: String by Delegate
 object Delegate {
     var value = "lol"
 
-    fun get(instance: Any?, data: PropertyMetadata): String {
+    fun getValue(instance: Any?, data: PropertyMetadata): String {
         return value
     }
 
-    fun set(instance: Any?, data: PropertyMetadata, newValue: String) {
+    fun setValue(instance: Any?, data: PropertyMetadata, newValue: String) {
         value = newValue
     }
 }