Exclude "desktop" from Client tab of /realm_activity.

The "desktop" counts aggregate all desktop clients, but on the
Clients tab, we are only interested in specific versions.

(imported from commit eea2d8da584a6fa32fa1f3a2bae71ef5daaba738)

zerver/views/__init__.py

@@ -2510,6 +2510,7 @@ def realm_client_table(user_summaries):
             'send',
             'pointer',
             'website',
+            'desktop',
     ]
 
     rows = []