Disambiguate isEmpty()

Summary:
Fixes T10250.

Rename the one I added to `hasAnyProperties()` for clarity.

Test Plan:
  - Viewed a project profile with content.
  - Viewed a project profile with no properties.
  - Viewed a workboard with tasks that had a mixture of additional projects and no additional projects.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10250

Differential Revision: https://secure.phabricator.com/D15151

src/applications/project/controller/PhabricatorProjectProfileController.php

@@ -125,7 +125,7 @@ final class PhabricatorProjectProfileController
       PhabricatorCustomField::ROLE_VIEW);
     $field_list->appendFieldsToPropertyList($project, $viewer, $view);
 
-    if ($view->isEmpty()) {
+    if (!$view->hasAnyProperties()) {
       return null;
     }