[CORE][Event] Make all events return \EventResult, enforced at container build time

src/Core/Modules/Module.php

@@ -22,6 +22,7 @@ declare(strict_types = 1);
 namespace App\Core\Modules;
 
 use App\Util\Common;
+use EventResult;
 
 /**
  * Base class for all GNU social modules (plugins and components)
@@ -64,22 +65,23 @@ abstract class Module
 
     // ------- Module initialize and cleanup ----------
 
-    private function defer(string $cycle)
+    private function defer(string $cycle): EventResult
     {
         $type = ucfirst(static::MODULE_TYPE);
         if (method_exists($this, $method = "on{$cycle}{$type}")) {
             $this->{$method}();
         }
+        return EventResult::next;
     }
 
     // Can't use __call or it won't be found by our event function finder
-    public function onInitializeModule()
+    public function onInitializeModule(): EventResult
     {
-        $this->defer('Initialize');
+        return $this->defer('Initialize');
     }
 
-    public function onCleanupModule()
+    public function onCleanupModule(): EventResult
     {
-        $this->defer('Cleanup');
+        return $this->defer('Cleanup');
     }
 }