Fix branch overflow in change-list-item

Screenshots: https://imgur.com/a/LpkWUOC

<a> should really have display:inline as usual. You can argue for
display:block, because it increases the click target, but
display:inline-block is never a great idea.

I have researched the origin of this and apparently there was a
misunderstanding in Change 119891 that display:inline-block would still
increase the click target, but that is not the case.

Change-Id: I76d19d312920110d5c5b6221e3ff197fc6159112
(cherry picked from commit 1bcdba68c5)

polygerrit-ui/app/elements/change-list/gr-change-list-item/gr-change-list-item.html

@@ -90,7 +90,6 @@ limitations under the License.
       a {
         color: inherit;
         cursor: pointer;
-        display: inline-block;
         text-decoration: none;
       }
       a:hover {