Fix trait imports

src/Core/Discussion.php

@@ -55,7 +55,7 @@ use Flarum\Util\Str;
  */
 class Discussion extends AbstractModel
 {
-    use Flarum\Foundation\EventGeneratorTrait;
+    use EventGeneratorTrait;
     use ScopeVisibilityTrait;
 
     /**

src/Core/DiscussionState.php

@@ -32,7 +32,7 @@ use Illuminate\Database\Eloquent\Builder;
  */
 class DiscussionState extends AbstractModel
 {
-    use Flarum\Foundation\EventGeneratorTrait;
+    use EventGeneratorTrait;
 
     /**
      * {@inheritdoc}

src/Core/Group.php

@@ -29,7 +29,7 @@ use Flarum\Event\GroupWasRenamed;
  */
 class Group extends AbstractModel
 {
-    use Flarum\Foundation\EventGeneratorTrait;
+    use EventGeneratorTrait;
     use ScopeVisibilityTrait;
 
     /**

src/Core/Post.php

@@ -39,7 +39,7 @@ use Illuminate\Database\Eloquent\Builder;
  */
 class Post extends AbstractModel
 {
-    use Flarum\Foundation\EventGeneratorTrait;
+    use EventGeneratorTrait;
     use ScopeVisibilityTrait;
 
     /**

src/User/User.php

@@ -56,7 +56,7 @@ use Symfony\Component\HttpFoundation\Session\SessionInterface;
  */
 class User extends AbstractModel
 {
-    use Flarum\Foundation\EventGeneratorTrait;
+    use EventGeneratorTrait;
     use ScopeVisibilityTrait;
 
     /**