Fix an issue with the Spaces EditField not reading values properly

Summary: Fixes T9988. This logic got inverted by accident at some point.

Test Plan:
  - Edited a task, shifting spaces.
  - Created a task in default space.
  - Created a task in custom space.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9988

Differential Revision: https://secure.phabricator.com/D14787

src/applications/policy/editor/PhabricatorPolicyEditEngineExtension.php

@@ -91,7 +91,7 @@ final class PhabricatorPolicyEditEngineExtension
         ->setValue($object->getPolicy($capability));
       $fields[] = $policy_field;
 
-      if (!($object instanceof PhabricatorSpacesInterface)) {
+      if ($object instanceof PhabricatorSpacesInterface) {
         if ($capability == PhabricatorPolicyCapability::CAN_VIEW) {
           $type_space = PhabricatorTransactions::TYPE_SPACE;
           if (isset($types[$type_space])) {