Make Phame blog policies non-nullable

Summary: Ref T6203. Ref T13661. These policies are incorrectly nullable, although it's likely that no pathway exists in the application to write NULL into them. Fix the schema.

Test Plan: Ran `bin/storage upgrade`.

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13661, T6203

Differential Revision: https://secure.phabricator.com/D21748

resources/sql/autopatches/20220401.phameinteract.01.sql

@@ -0,0 +1,5 @@
+UPDATE {$NAMESPACE}_phame.phame_blog
+  SET editPolicy = 'admin' WHERE editPolicy IS NULL;
+
+ALTER TABLE {$NAMESPACE}_phame.phame_blog
+  CHANGE editPolicy editPolicy VARBINARY(64) NOT NULL;

resources/sql/autopatches/20220401.phameinteract.02.sql

@@ -0,0 +1,5 @@
+UPDATE {$NAMESPACE}_phame.phame_blog
+  SET viewPolicy = 'admin' WHERE viewPolicy IS NULL;
+
+ALTER TABLE {$NAMESPACE}_phame.phame_blog
+  CHANGE viewPolicy viewPolicy VARBINARY(64) NOT NULL;

src/applications/phame/storage/PhameBlog.php

@@ -56,10 +56,8 @@ final class PhameBlog extends PhameDAO
         'profileImagePHID' => 'phid?',
         'headerImagePHID' => 'phid?',
 
-        // T6203/NULLABILITY
-        // These policies should always be non-null.
-        'editPolicy' => 'policy?',
-        'viewPolicy' => 'policy?',
+        'editPolicy' => 'policy',
+        'viewPolicy' => 'policy',
       ),
       self::CONFIG_KEY_SCHEMA => array(
         'key_phid' => null,