[CrOS PhoneHub] Still reveal tooltip on notification row's (i) click.

Previously, if the user clicked the (i) tooltip icon, the tooltip
would not appear. Now it does.

Bug: 1168153
Change-Id: I1bba717a760961ae1088d0bfba6b740940d05d19
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2639228
Commit-Queue: Regan Hsu <hsuregan@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845731}

chrome/browser/resources/settings/chromeos/multidevice_page/multidevice_feature_item.html

@@ -38,6 +38,11 @@
       cr-policy-indicator {
         padding: 0 var(--cr-controlled-by-spacing);
       }
+
+      #help-icon:active {
+        /* Still reveal tooltip on click. */
+        pointer-events: none;
+      }
     </style>
     <div id="card" class="settings-box two-line no-padding">
       <div id="linkWrapper" class="link-wrapper"