Insert '()' under write action in finishing anonymous object template (EA-82700)

(cherry picked from commit 3234d76)

idea/idea-live-templates/src/org/jetbrains/kotlin/idea/liveTemplates/macro/AnonymousTemplateEditingListener.kt

@@ -29,6 +29,7 @@ import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.idea.caches.resolve.analyze
 import org.jetbrains.kotlin.idea.core.overrideImplement.ImplementMembersHandler
+import org.jetbrains.kotlin.idea.util.application.runWriteAction
 import org.jetbrains.kotlin.psi.KtReferenceExpression
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.lazy.BodyResolveMode
@@ -58,7 +59,10 @@ internal class AnonymousTemplateEditingListener(private val psiFile: PsiFile, pr
         if (classDescriptor != null) {
             if (classDescriptor!!.kind == ClassKind.CLASS) {
                 val placeToInsert = classRef!!.textRange.endOffset
-                PsiDocumentManager.getInstance(psiFile.project).getDocument(psiFile)!!.insertString(placeToInsert, "()")
+
+                runWriteAction {
+                    PsiDocumentManager.getInstance(psiFile.project).getDocument(psiFile)!!.insertString(placeToInsert, "()")
+                }
 
                 var hasConstructorsParameters = false
                 for (cd in classDescriptor!!.constructors) {

idea/idea-live-templates/testData/object_ForClass.exp.kt

@@ -0,0 +1,7 @@
+// Using class is important
+// Test for EA-82700
+
+open class A
+val test = object : A() {
+
+}

idea/idea-live-templates/testData/object_ForClass.kt

@@ -0,0 +1,5 @@
+// Using class is important
+// Test for EA-82700
+
+open class A
+val test = <caret>

idea/idea-live-templates/tests/org/jetbrains/kotlin/idea/liveTemplates/LiveTemplatesTest.kt

@@ -213,6 +213,14 @@ class LiveTemplatesTest : KotlinLightCodeInsightFixtureTestCase() {
         checkAfter()
     }
 
+    fun testObject_ForClass() {
+        start()
+
+        typeAndNextTab("A")
+
+        checkAfter()
+    }
+
     private fun doTestIfnInn() {
         start()
 
@@ -272,7 +280,7 @@ class LiveTemplatesTest : KotlinLightCodeInsightFixtureTestCase() {
             CommandProcessor.getInstance().executeCommand(
                     project,
                     {
-                        ApplicationManager.getApplication().runWriteAction { templateState!!.nextTab() }
+                        templateState!!.nextTab()
                     },
                     "nextTab",
                     null)