Always show add topic row in metadata

Add topic is heavily used by some teams. To avoid more clicks to add
topic we will show it always.

To reduce clutter, we will in future consider host config or
user role based showing/hiding.

Change-Id: I794c028c8f9c81b43918511fac193b702c20f147
diff --git a/polygerrit-ui/app/utils/change-metadata-util.ts b/polygerrit-ui/app/utils/change-metadata-util.ts
index c3eb846..d39b10b 100644
--- a/polygerrit-ui/app/utils/change-metadata-util.ts
+++ b/polygerrit-ui/app/utils/change-metadata-util.ts
@@ -41,11 +41,11 @@
     Metadata.REVIEWERS,
     Metadata.REPO_BRANCH,
     Metadata.SUBMITTED,
+    Metadata.TOPIC,
   ],
   SHOW_IF_SET: [
     Metadata.CC,
     Metadata.HASHTAGS,
-    Metadata.TOPIC,
     Metadata.UPLOADER,
     Metadata.AUTHOR,
     Metadata.COMMITTER,