feat: add card PIN management and card renewal to child wallet

- Add set PIN / change PIN multi-step flow (4-digit card PIN + 6-digit SCA PIN) with Treezor PCI DSS SCA proof generation
  - Add unblock PIN for blocked cards after failed attempts
  - Add renew card with SCA proof (same as wallet creation)
  - Show menu options conditionally based on hasCardPin and isPinBlocked flags
  - Make ScaPinView configurable with pinLength parameter (default 6)
  - Add hasCardPin to ChildProfileEntity and isPinBlocked to WalletCardEntity
  - Add EN/ES localizations for all new screens and messages

apps/mobile_app/lib/navigation/app_router.dart

@@ -402,6 +402,18 @@ void configureAppRouter() {
                         pageBuilder:
                             const EditChildProfileBuilder().buildPage,
                       ),
+                      GoRoute(
+                        path: 'set-pin',
+                        name: 'home_set_card_pin',
+                        pageBuilder:
+                            const SetCardPinBuilder().buildPage,
+                      ),
+                      GoRoute(
+                        path: 'change-pin',
+                        name: 'home_change_card_pin',
+                        pageBuilder:
+                            const ChangeCardPinBuilder().buildPage,
+                      ),
                     ],
                   ),
                 ],