Privacy Settings: Fix interaction with toggles under managed radio

Fixes an issue where the mouse interactions with the toggle buttons
under a settings-collapse-radio-button which has been disabled by poliy
do not work.

Bug: 1156264
Change-Id: Ifac3bd2767378b9f05ad95586ec4a46ea262a561
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2577225Reviewed-by: Rainhard Findling <rainhard@chromium.org>
Commit-Queue: Theodore Olsauskas-Warren <sauski@google.com>
Cr-Commit-Position: refs/heads/master@{#834637}

chrome/browser/resources/settings/privacy_page/security_page.html

@@ -43,6 +43,10 @@
         padding-inline-start: 0;
       }
 
+      settings-toggle-button:not([disabled]) {
+        pointer-events: all;
+      }
+
       #safeBrowsingEnhanced .bullet-line:last-of-type {
         padding-bottom: 12px;
       }