[CrOS Settings] Make "Note-taking app" select wider.

This fixes an issue where the app name can be truncated if it is a very
long string.

Bug: b/146928018
Change-Id: Ic9831ef42342890d290c9a2b2f09a8d8ecad3cf6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2033920
Auto-Submit: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738304}

chrome/browser/resources/settings/chromeos/device_page/stylus.html

@@ -27,6 +27,10 @@
         padding: 0 var(--cr-controlled-by-spacing);
       }
 
+      #selectApp {
+        width: 400px;
+      }
+
       #note-taking-app-lock-screen-settings {
         padding: 0 var(--cr-section-padding);
       }