Fix a tokenizer issue in a rare edge case

Summary:
Ref T7689. We may not propgate the viewer down to the controls in some rendering pathways. An example is "Create Task..." on workboard columns.

Instead, move the propagation a little deeper.

Test Plan: "Create Task..." on a workboard column.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T7689

Differential Revision: https://secure.phabricator.com/D12250

src/view/form/AphrontFormView.php

@@ -92,6 +92,10 @@ final class AphrontFormView extends AphrontView {
   }
 
   public function buildLayoutView() {
+    foreach ($this->controls as $control) {
+      $control->setUser($this->getUser());
+    }
+
     return id(new PHUIFormLayoutView())
       ->setFullWidth($this->getFullWidth())
       ->appendChild($this->renderDataInputs())
@@ -118,10 +122,6 @@ final class AphrontFormView extends AphrontView {
   public function render() {
     require_celerity_resource('phui-form-view-css');
 
-    foreach ($this->controls as $control) {
-      $control->setUser($this->getUser());
-    }
-
     $layout = $this->buildLayoutView();
 
     if (!$this->user) {