Do not put kotlin dependency in package.json used for tests

kotlin.js is being extracted from kotlin-stdlib-js by populateNodeModules task,
therefore getting it from npm is not necessary and fails when SNAPSHOT dependency was used.

Author: ilya-g

gradle/node-js.gradle

@@ -13,7 +13,7 @@ node {
 task prepareNodePackage(type: Copy) {
    from("npm") {
        include 'package.json'
-       expand project.properties
+       expand (project.properties + [kotlinDependency: ""])
    }
    from("npm") {
        exclude 'package.json'

gradle/publish-npm-js.gradle

@@ -20,7 +20,7 @@ def dryRun = prop("dryRun", "false")
 
 task preparePublishNpm(type: Copy, dependsOn: [compileKotlin2Js]) {
     from(npmTemplateDir) {
-        expand project.properties
+        expand (project.properties + [kotlinDependency: "\"kotlin\": \"$kotlin_version\""])
     }
     from("$buildDir/classes/kotlin/main")
     into npmDeployDir

js/kotlinx-coroutines-core-js/npm/package.json

@@ -21,6 +21,6 @@
     "JetBrains"
   ],
   "dependencies": {
-    "kotlin": "$kotlin_version"
+    $kotlinDependency
   }
 }