[CQ] migrate off to-be-removed Notification APIs (#8075)

Migrates from unsafe slated-for-removal `Notification` constructors.

See: #7718

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Author: pq

flutter-idea/src/io/flutter/FlutterMessages.java

@@ -37,7 +37,7 @@ public static void showWarning(String title, String message, @Nullable Project p
         FLUTTER_NOTIFICATION_GROUP_ID,
         title,
         message,
-        NotificationType.WARNING, NotificationListener.URL_OPENING_LISTENER), project);
+        NotificationType.WARNING).setListener(NotificationListener.URL_OPENING_LISTENER), project);
   }
 
   public static void showInfo(String title, String message, @Nullable Project project) {

flutter-idea/src/io/flutter/ProjectOpenActivity.java

@@ -122,11 +122,10 @@ private static class PackagesOutOfDateNotification extends Notification {
     @NotNull private final PubRoot myRoot;
 
     public PackagesOutOfDateNotification(@NotNull Project project, @NotNull PubRoot root) {
-      super("Flutter Packages", FlutterIcons.Flutter, "Flutter pub get.",
-            null, "The pubspec.yaml file has been modified since " +
-                  "the last time 'flutter pub get' was run.",
-            NotificationType.INFORMATION, null);
-
+      super("Flutter Packages", "The pubspec.yaml file has been modified since " +
+                                "the last time 'flutter pub get' was run.", NotificationType.INFORMATION);
+      setIcon(FlutterIcons.Flutter);
+      
       myProject = project;
       myRoot = root;
 

flutter-idea/src/io/flutter/survey/FlutterSurveyNotifications.java

@@ -88,14 +88,8 @@ private void checkForDisplaySurvey() {
     if (properties.getBoolean(survey.uniqueId)) return;
 
     final Notification notification = new Notification(
-      FlutterMessages.FLUTTER_NOTIFICATION_GROUP_ID,
-      FlutterIcons.Flutter,
-      survey.title,
-      null,
-      null,
-      NotificationType.INFORMATION,
-      null
-    );
+      FlutterMessages.FLUTTER_NOTIFICATION_GROUP_ID, survey.title, "", NotificationType.INFORMATION
+    ).setIcon(FlutterIcons.Flutter);
 
     notification.addAction(new AnAction(SURVEY_ACTION_TEXT) {
       @Override