composebox_typeahead tests: Add some missing attributes to user objects.

This doesn't fully add all missing attributes, but it adds ones that
will soon be needed in upcoming commits. Ideally eventually these
objects are full fake User objects with defaults for required
attributes.

web/tests/composebox_typeahead.test.js

@@ -283,67 +283,80 @@ const ali = {
     email: "ali@zulip.com",
     user_id: 98,
     full_name: "Ali",
+    is_moderator: false,
 };
 
 const alice = {
     email: "alice@zulip.com",
     user_id: 99,
     full_name: "Alice",
+    is_moderator: false,
 };
 
 const hamlet = {
     email: "hamlet@zulip.com",
     user_id: 100,
     full_name: "King Hamlet",
+    is_moderator: false,
 };
 
 const othello = {
     email: "othello@zulip.com",
     user_id: 101,
     full_name: "Othello, the Moor of Venice",
+    is_moderator: false,
+    delivery_email: null,
 };
 const cordelia = {
     email: "cordelia@zulip.com",
     user_id: 102,
     full_name: "Cordelia, Lear's daughter",
+    is_moderator: false,
 };
 const deactivated_user = {
     email: "other@zulip.com",
     user_id: 103,
     full_name: "Deactivated User",
+    is_moderator: false,
 };
 const lear = {
     email: "lear@zulip.com",
     user_id: 104,
     full_name: "King Lear",
+    is_moderator: false,
 };
 
 const twin1 = {
     full_name: "Mark Twin",
+    is_moderator: false,
     user_id: 105,
     email: "twin1@zulip.com",
 };
 
 const twin2 = {
     full_name: "Mark Twin",
+    is_moderator: false,
     user_id: 106,
     email: "twin2@zulip.com",
 };
 
 const gael = {
     full_name: "Gaël Twin",
+    is_moderator: false,
     user_id: 107,
     email: "twin3@zulip.com",
 };
 
 const hal = {
     full_name: "Earl Hal",
+    is_moderator: false,
     user_id: 108,
     email: "hal@zulip.com",
 };
 
 const harry = {
     full_name: "Harry",
+    is_moderator: false,
     user_id: 109,
     email: "harry@zulip.com",
 };