Fix tests: "infix modifier required" and "operator modifier required" errors

idea/testData/quickfix/createFromUsage/createFunction/iterator/createIteratorFromUsage3.kt

@@ -1,16 +1,16 @@
 // "Create member function 'next'" "true"
 class FooIterator<T> {
-    fun hasNext(): Boolean { return false }
+    operator fun hasNext(): Boolean { return false }
 }
 class Foo<T> {
-    fun iterator(): FooIterator<String> {
+    operator fun iterator(): FooIterator<String> {
         throw UnsupportedOperationException("not implemented")
     }
 }
-fun Any.component1(): Int {
+operator fun Any.component1(): Int {
     return 0
 }
-fun Any.component2(): Int {
+operator fun Any.component2(): Int {
     return 0
 }
 fun foo() {

idea/testData/quickfix/createFromUsage/createFunction/iterator/createIteratorFromUsage3.kt.after

@@ -1,20 +1,20 @@
 // "Create member function 'next'" "true"
 class FooIterator<T> {
-    fun hasNext(): Boolean { return false }
+    operator fun hasNext(): Boolean { return false }
 
     operator fun next(): Any {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }
 class Foo<T> {
-    fun iterator(): FooIterator<String> {
+    operator fun iterator(): FooIterator<String> {
         throw UnsupportedOperationException("not implemented")
     }
 }
-fun Any.component1(): Int {
+operator fun Any.component1(): Int {
     return 0
 }
-fun Any.component2(): Int {
+operator fun Any.component2(): Int {
     return 0
 }
 fun foo() {