docs(ui-user-questions): state the custom-row focus rule literally

packages/client/ui-user-questions/src/client/QuestionComposer.module.css

@@ -315,9 +315,9 @@
 }
 
 /* Custom answer row (figma 973:36427): an option-shaped row whose copy is an
-   inline text input; focus or a typed draft lifts it to the selected look.
-   A single-select row whose option is chosen keeps focus out of that look:
-   the radio group shows one selection until typing replaces the option. */
+   inline text input; focus or a typed draft gives it the selected look.
+   While a single-select option is chosen, focus alone does not apply that
+   look, so the radio group shows one selection; typing clears the option. */
 .customRow {
   display: flex;
   /* Same first-line alignment as .option — the indicator seat carries the