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

js/js.translator/testData/inlineMultiFile/cases/builders/builders.2.kt

@@ -28,7 +28,7 @@ abstract class Tag(val name: String) : Element() {
     val children = ArrayList<Element>()
     val attributes = HashMap<String, String>()
 
-    inline protected fun initTag<T : Element>(tag: T, init: T.() -> Unit): T {
+    inline protected fun <T : Element> initTag(tag: T, init: T.() -> Unit): T {
         tag.init()
         children.add(tag)
         return tag
@@ -52,7 +52,7 @@ abstract class Tag(val name: String) : Element() {
 }
 
 abstract class TagWithText(name: String) : Tag(name) {
-    fun String.plus() {
+    operator fun String.unaryPlus() {
         children.add(TextElement(this))
     }
 }

js/js.translator/testData/inlineMultiFile/cases/buildersAndLambdaCapturing/buildersAndLambdaCapturing.2.kt

@@ -28,7 +28,7 @@ abstract class Tag(val name: String) : Element() {
     val children = ArrayList<Element>()
     val attributes = HashMap<String, String>()
 
-    inline protected fun initTag<T : Element>(tag: T, init: T.() -> Unit): T {
+    inline protected fun <T : Element> initTag(tag: T, init: T.() -> Unit): T {
         tag.init()
         children.add(tag)
         return tag
@@ -52,7 +52,7 @@ abstract class Tag(val name: String) : Element() {
 }
 
 abstract class TagWithText(name: String) : Tag(name) {
-    fun String.plus() {
+    operator fun String.unaryPlus() {
         children.add(TextElement(this))
     }
 }

js/js.translator/testData/inlineMultiFile/cases/with/with.2.kt

@@ -32,4 +32,4 @@ public fun Input.copyTo(output: Output, size: Int): Int {
     return output.doOutput(this.data())
 }
 
-public inline fun with2<T>(receiver : T, crossinline body :  T.() -> Unit) : Unit = {receiver.body()}()
+public inline fun <T> with2(receiver : T, crossinline body :  T.() -> Unit) : Unit = {receiver.body()}()