[realbox] Prevents input from overlapping with voice search focus ring

Fixed: 1121509
Change-Id: I9b6919dfa12a31909d4cee9cbcc02638bbfe2813
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2559645Reviewed-by: Esmael Elmoslimany <aee@chromium.org>
Commit-Queue: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#831070}

chrome/browser/resources/new_tab_page/realbox.html

@@ -23,7 +23,7 @@
     font-size: 16px;
     height: 100%;
     outline: none;
-    padding-inline-end:  40px;
+    padding-inline-end:  44px;
     padding-inline-start: 52px;
     position: relative;
     width: 100%;