fix(FN-1991): prevent horizontal scrolling in mobile pi settings

- Add horizontal overflow clipping to the mobile settings content container
- Wrap long helper text in settings form-group small elements to avoid viewport overflow
- Preserve vertical scrolling behavior for settings sections on small screens

packages/dashboard/app/styles.css

@@ -7058,9 +7058,15 @@ body {
   .settings-content {
     flex: 1;
     min-height: 0;
+    overflow-x: hidden;
     overflow-y: auto;
   }
 
+  .settings-content .form-group small {
+    overflow-wrap: break-word;
+    word-break: break-all;
+  }
+
   .settings-content input,
   .settings-content select,
   .settings-content textarea {