[Autofill Assistant] Force the initial appearance of edit chevrons next to all PR sections.

before: https://screenshot.googleplex.com/je17gMxXPRX.png
after: https://screenshot.googleplex.com/AQnyPSA2bs1.png

Bug: 806868
Change-Id: Ia8b79c667d6b50a9f689d68831c1e6e29b3324c6
Reviewed-on: https://chromium-review.googlesource.com/c/1333777
Commit-Queue: Clemens Arbesser <arbesser@google.com>
Reviewed-by: Mathias Carlen <mcarlen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#607945}

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/ui/PaymentRequestUI.java

@@ -389,6 +389,9 @@ public class PaymentRequestUI implements DialogInterface.OnDismissListener, View
 
         // Enabled in updatePayButtonEnabled() when the user has selected all payment options.
         mPayButton.setEnabled(false);
+
+        // Force the initial appearance of edit chevrons next to all sections.
+        updateSectionVisibility();
     }
 
     /**