gradle.kts importing: proper check for root project

idea/idea-gradle/src/org/jetbrains/kotlin/idea/scripting/gradle/importing/KotlinDslScriptModelResolver.kt

@@ -34,8 +34,7 @@ class KotlinDslScriptModelResolver : KotlinDslScriptModelResolverCommon() {
         ideProject: DataNode<ProjectData>
     ) {
         root.projects.forEach {
-            val gradleProject = it as? GradleProject
-            if (gradleProject == null || gradleProject.parent == null) {
+            if (it.projectIdentifier.projectPath == ":") {
                 resolverCtx.models.getModel(it, KotlinDslScriptsModel::class.java)?.let { model ->
                     processScriptModel(ideProject, model, it.projectIdentifier.projectPath)
                 }