feat(widget): Allow widget loading in mobile app WebViews when domain restrictions are set (#13763)

When `allowed_domains` is configured on a web widget inbox, the server
responds with Content-Security-Policy: frame-ancestors <domains>, which
blocks the widget iframe in mobile app WebViews. This happens because
WebViews load content from file:// or null origins, which cannot match
any domain in the frame-ancestors directive.

This adds a per-inbox toggle — "Enable widget in mobile apps" — that
skips the frame-ancestors header when the request has no valid Origin
(i.e., it comes from a mobile WebView). Web browsers with a real origin
still get domain restrictions enforced as usual.

<img width="2330" height="1490" alt="CleanShot 2026-03-11 at 10 13
01@2x"
src="https://github.com/user-attachments/assets/d9326fac-020d-4ce7-9ced-0c185468c8fc"
/>


Fixes
https://linear.app/chatwoot/issue/CW-6560/widget-is-not-loading-from-iosandroid-widgets

How to test

1. Go to Settings → Inboxes → (Web Widget) → Configuration
2. Set allowed_domains to a specific domain (e.g., *.example.com)
3. Try loading the widget in a mobile app WebView — it should be blocked
4. Enable "Enable widget in mobile apps" checkbox
5. Reload the widget in the WebView — it should now load successfully
6. Verify the widget on a website not in the allowed domains list is
still blocked

---------

Co-authored-by: iamsivin <iamsivin@gmail.com>

app/javascript/dashboard/components-next/Settings/SettingsToggleSection.vue

@@ -14,6 +14,10 @@ defineProps({
     type: Boolean,
     default: false,
   },
+  hideToggle: {
+    type: Boolean,
+    default: false,
+  },
 });
 
 const modelValue = defineModel({ type: Boolean, default: false });
@@ -28,7 +32,8 @@ const modelValue = defineModel({ type: Boolean, default: false });
         <span class="text-heading-3 text-n-slate-12">
           {{ header }}
         </span>
-        <ToggleSwitch v-model="modelValue" />
+        <div v-if="hideToggle" class="size-2" />
+        <ToggleSwitch v-else v-model="modelValue" />
       </div>
       <span v-if="description" class="text-body-main text-n-slate-11">
         {{ description }}