[App Management] Change row height for main view.

Change row height for the main view.

Old view: https://bugs.chromium.org/p/chromium/issues/attachment?aid=409715&signed_aid=YSeOQ3JwzBU8qYy0vZmkqw==&inline=1
New view: https://bugs.chromium.org/p/chromium/issues/attachment?aid=409716&signed_aid=srOEmpb-mKz-hv5te-fa_Q==&inline=1

Bug: 999923
Change-Id: Ie487f9977cb61b618a2e9c7b3815fb25d8f45a02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1778894
Auto-Submit: Jeevan Shikaram <jshikaram@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Dominick Ng <dominickn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#692415}

chrome/browser/resources/settings/chromeos/os_apps_page/app_management_page/app_item.html

@@ -17,7 +17,7 @@
         display: flex;
         flex-direction: row;
         font-weight: 400;
-        height: 64px;
+        height: 48px;
       }
 
       #app-title {