Ignore WIP changes in "CCed on" dashboard section

Even though the WorkInProgress design proposal only mentions that WIP
changes are subtracted from "Incoming reviews" section:

"
The query driving the existing *Incoming reviews* section subtracts WIP
changes from the result. This has the effect of hiding WIP changes from
their reviewers' dashboards.
"

consistently also subtract the WIP changes from the "CCed on" dashboard
section.

Bug: Issue 12850
Change-Id: Ibab954bb6b3b8a66d4da842bc1ac3f53e8e18a68
diff --git a/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html b/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html
index 0d620bd..ce20127 100644
--- a/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html
+++ b/polygerrit-ui/app/elements/core/gr-navigation/gr-navigation.html
@@ -140,10 +140,10 @@
             '(reviewer:${user} OR assignee:${user})',
       },
       {
-        // Open changes the viewed user is CCed on. Changes ignored by the viewing
-        // user are filtered out.
+        // Non-WIP open changes the viewed user is CCed on. Changes ignored by the
+        // viewing user are filtered out.
         name: 'CCed on',
-        query: 'is:open -is:ignored cc:${user}',
+        query: 'is:open -is:wip -is:ignored cc:${user}',
       },
       {
         name: 'Recently closed',