[JS IR] explicitly mark JsName's temporary or not

js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsImport.kt

@@ -14,7 +14,7 @@ class JsImport(
         val name: JsName,
         val alias: JsName?
     ) {
-        constructor(name: String, alias: String?) : this(JsName(name), alias?.let { JsName(it) })
+        constructor(name: String, alias: String?) : this(JsName(name, false), alias?.let { JsName(it, false) })
     }
 
     override fun accept(visitor: JsVisitor) {

js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsName.java

@@ -25,10 +25,6 @@ public class JsName extends HasMetadata implements Symbol {
     this.temporary = temporary;
   }
 
-  public JsName(@NotNull String ident) {
-    this(ident, false);
-  }
-
   public boolean isTemporary() {
     return temporary;
   }

js/js.tests/test/org/jetbrains/kotlin/js/test/ast/FixForwardReferencesTest.kt

@@ -241,7 +241,7 @@ private fun String.toAst(): JsNode {
             val (name, index) = parts
             if (ident != "${name}_$index") error("Unable to parse: $ident")
 
-            JsName(name).also {
+            JsName(name, false).also {
                 nameMapping[ident] = this to it
             }
         }
@@ -259,7 +259,7 @@ private fun JsNode.makeNamesUnique(): JsNode {
                 nameCounter[ident] = it + 1
             }
 
-            JsName("${ident}_$index").also {
+            JsName("${ident}_$index", false).also {
                 nameMap[this] = it
             }
         }