Open create-flow method modals with editable fields and tertiary default copy.

Seeded section text should look like the form default state, not locked primary, and Customize stays on the kebab instead of unlocking the body.

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

tests/pages/communication-methods.test.jsx

@@ -126,6 +126,33 @@ describe("Create flow communication-methods page", () => {
     expect(screen.getByRole("menuitem", { name: "Customize" })).toBeInTheDocument();
   });
 
+  test("meta-only custom policy opens with editable section fields", async () => {
+    const user = userEvent.setup();
+    render(
+      <CommunicationMethodsScreenWithState
+        initial={{
+          selectedCommunicationMethodIds: [CUSTOM_POLICY_ID],
+          customMethodCardMetaById: {
+            [CUSTOM_POLICY_ID]: { label: "My policy", supportText: "Desc" },
+          },
+        }}
+      />,
+    );
+
+    await user.click(
+      screen.getAllByRole("button", { name: /My policy: Desc/ })[0],
+    );
+    const dialog = await screen.findByRole("dialog");
+    const textboxes = within(dialog).getAllByRole("textbox");
+    expect(textboxes.length).toBeGreaterThan(0);
+    for (const field of textboxes) {
+      expect(field).not.toBeDisabled();
+    }
+    expect(
+      within(dialog).queryByText("No custom fields yet."),
+    ).not.toBeInTheDocument();
+  });
+
   test("renders without error", () => {
     render(<CommunicationMethodsScreen />);