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

idea/testData/intentions/convertForEachToForLoop/infixCall.kt

@@ -2,5 +2,5 @@
 fun foo() {
     val x = 1..4
 
-    x <caret>forEach { a -> a }
+    x.<caret>forEach { a -> a }
 }

idea/testData/intentions/convertForEachToForLoop/infixCallNotAvailable.kt

@@ -3,5 +3,5 @@
 fun foo() {
     val x = 1..4
 
-    <caret>x forEach { a -> a }
+    <caret>x.forEach { a -> a }
 }

idea/testData/intentions/convertForEachToForLoop/parenthesizedExpression.kt

@@ -1,4 +1,7 @@
 // WITH_RUNTIME
+
+infix fun Int.upTo(other: Int) = this.rangeTo(other)
+
 fun main() {
-    (1 rangeTo 2).<caret>forEach { x -> x }
+    (1 upTo 2).<caret>forEach { x -> x }
 }

idea/testData/intentions/convertForEachToForLoop/parenthesizedExpression.kt.after

@@ -1,6 +1,9 @@
 // WITH_RUNTIME
+
+infix fun Int.upTo(other: Int) = this.rangeTo(other)
+
 fun main() {
-    for (x in 1 rangeTo 2) {
+    for (x in 1 upTo 2) {
         x
     }
 }