[Switch Access] restart autoScan timer after user performs action

Bug: None
Change-Id: I3da18fe44f11fb9b791ba7be8b89d3b73bb94f02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1726652
Commit-Queue: Anastasia Helfinstein <anastasi@google.com>
Auto-Submit: Anastasia Helfinstein <anastasi@google.com>
Reviewed-by: Akihiro Ota <akihiroota@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682955}

chrome/browser/resources/chromeos/switch_access/commands.js

@@ -42,6 +42,7 @@ class Commands {
    */
   runCommand_(command) {
     this.commandMap_.get(command)();
+    this.switchAccess_.performedUserAction();
   }
 
   /**