Fix compiler warning in ide test utils

idea/tests/org/jetbrains/kotlin/idea/script/extensionsUtil.kt

@@ -9,11 +9,11 @@ import com.intellij.openapi.Disposable
 import com.intellij.openapi.extensions.ExtensionPointName
 import com.intellij.openapi.project.Project
 
-fun <T> addExtensionPointInTest(
+fun <T : Any> addExtensionPointInTest(
     pointName: ExtensionPointName<T>,
     project: Project,
     provider: T,
     testRootDisposable: Disposable
 ) {
     pointName.getPoint(project).registerExtension(provider, testRootDisposable)
-}
+}