Resolve #3372166 "Wrong language"

Closes #3372166

src/Plugin/EmailAdjuster/HooksEmailAdjuster.php

@@ -29,17 +29,28 @@ class HooksEmailAdjuster extends EmailAdjusterBase {
    */
   public function init(EmailInterface $email) {
     $this->moduleHandler = \Drupal::moduleHandler();
+    $this->invokeHooks($email);
+  }
 
-    foreach (EmailInterface::PHASE_NAMES as $phase => $name) {
-      if ($phase == EmailInterface::PHASE_INIT) {
-        // Call init hooks immediately.
-        $this->invokeHooks($email);
-      }
-      else {
-        // Add processor to invoke hooks later.
-        $email->addProcessor([$this, 'invokeHooks'], $phase, EmailInterface::DEFAULT_WEIGHT, "hook_mailer_$name");
-      }
-    }
+  /**
+   * {@inheritdoc}
+   */
+  public function build(EmailInterface $email) {
+    $this->invokeHooks($email);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function postRender(EmailInterface $email) {
+    $this->invokeHooks($email);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function postSend(EmailInterface $email) {
+    $this->invokeHooks($email);
   }
 
   /**
@@ -52,7 +63,7 @@ class HooksEmailAdjuster extends EmailAdjusterBase {
    * @see hook_mailer_TYPE_PHASE()
    * @see hook_mailer_TYPE__SUBTYPE_PHASE()
    */
-  public function invokeHooks(EmailInterface $email) {
+  protected function invokeHooks(EmailInterface $email) {
     $name = EmailInterface::PHASE_NAMES[$email->getPhase()];
     $type = $email->getType();
     $sub_type = $email->getSubType();