fix tests in org.jetbrains.kotlin.js.test.semantics

js/js.translator/testData/inline/cases/vararg.kt

@@ -5,7 +5,7 @@ package foo
 // CHECK_CONTAINS_NO_CALLS: test2
 // CHECK_CONTAINS_NO_CALLS: test3
 
-inline fun concat(vararg strings: String): String {
+internal inline fun concat(vararg strings: String): String {
     var result = ""
 
     for (string in strings) {
@@ -15,15 +15,15 @@ inline fun concat(vararg strings: String): String {
     return result
 }
 
-fun test1(): String {
+internal fun test1(): String {
     return concat()
 }
 
-fun test2(): String {
+internal fun test2(): String {
     return concat("a", "b", "c")
 }
 
-fun test3(list: Array<String>): String {
+internal fun test3(list: Array<String>): String {
     return concat(*list)
 }