Hide unused helper marks on selection cards and modal section labels until tooltip behavior ships.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/components/CommunicationMethodsScreenPersistence.test.tsx

@@ -77,6 +77,7 @@ describe("CommunicationMethodsScreen — Add Platform persistence", () => {
     );
 
     const dialog = await screen.findByRole("dialog");
+    expect(within(dialog).queryByAltText("Help")).not.toBeInTheDocument();
     const textboxes = within(dialog).getAllByRole("textbox");
     expect(textboxes.length).toBe(3);
     const corePrincipleField = textboxes[0] as HTMLTextAreaElement;