Fix Quickfix for missing operator adds infix modifier to created function (#1012)

Fixes #KT-14907

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/greaterOrEqualOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.compareTo'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun compareTo(t: T): Int {
+    operator fun compareTo(t: T): Int {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/inOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.contains'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun contains(t: T): Boolean {
+    operator fun contains(t: T): Boolean {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/lessOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.compareTo'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun compareTo(t: T): Int {
+    operator fun compareTo(t: T): Int {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/notInOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.contains'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun contains(t: T): Boolean {
+    operator fun contains(t: T): Boolean {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusAssignOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.plusAssign'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun plusAssign(t: T) {
+    operator fun plusAssign(t: T) {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusExtraArgs.kt.after

@@ -2,7 +2,7 @@
 
 class A<T>(val n: T) {
     operator fun unaryPlus(): A<T> = throw Exception()
-    infix operator fun plus(t: T): A<T> {
+    operator fun plus(t: T): A<T> {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusForAssignmentOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.plus'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun plus(t: T): A<T> {
+    operator fun plus(t: T): A<T> {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusMissingArgs.kt.after

@@ -2,7 +2,7 @@
 
 class A<T>(val n: T) {
     fun plus(i: Int, s: String): A<T> = throw Exception()
-    infix operator fun plus(t: T): A<T> {
+    operator fun plus(t: T): A<T> {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusOnLibType.kt.after

@@ -7,6 +7,6 @@ fun test() {
     val a: A<Int> = 2 + A(1)
 }
 
-private infix operator fun Int.plus(a: A<Int>): A<Int> {
+private operator fun Int.plus(a: A<Int>): A<Int> {
     TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.plus'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun plus(t: T): A<T> {
+    operator fun plus(t: T): A<T> {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/plusOnUserTypeWithTypeParams.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.plus'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun plus(i: Int): A<T> {
+    operator fun plus(i: Int): A<T> {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/typeMismatch.kt.after

@@ -7,6 +7,6 @@ fun test() {
     A() * "1"
 }
 
-private infix operator fun A.times(s: String) {
+private operator fun A.times(s: String) {
     TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/whenInOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.contains'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun contains(t: T): Boolean {
+    operator fun contains(t: T): Boolean {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/binaryOperations/whenNotInOnUserType.kt.after

@@ -1,7 +1,7 @@
 // "Create member function 'A.contains'" "true"
 
 class A<T>(val n: T) {
-    infix operator fun contains(t: T): Boolean {
+    operator fun contains(t: T): Boolean {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }