Add public readonly to the template grid view events

Author: Cyperghost

wcfsetup/install/files/lib/event/gridView/admin/TemplateGridViewInitialized.class.php

@@ -15,7 +15,7 @@
  */
 final class TemplateGridViewInitialized implements IPsr14Event
 {
-    public function __construct(TemplateGridView $param)
+    public function __construct(public readonly TemplateGridView $param)
     {
     }
 }

wcfsetup/install/files/lib/event/interaction/admin/TemplateInteractionCollecting.class.php

@@ -15,7 +15,7 @@
  */
 final class TemplateInteractionCollecting implements IPsr14Event
 {
-    public function __construct(TemplateInteractions $param)
+    public function __construct(public readonly TemplateInteractions $param)
     {
     }
 }