decimal format for creating order

packages/espressocash_app/lib/features/ramp/partners/brij/services/brij_off_ramp_order_service.dart

@@ -192,9 +192,9 @@ class BrijOffRampOrderService implements Disposable {
           }
 
           final orderId = await _kycRepository.createOffRampOrder(
-            cryptoAmount: submittedAmount.value.toString(),
+            cryptoAmount: submittedAmount.decimal.toDouble().toString(),
             cryptoCurrency: submittedAmount.cryptoCurrency.token.symbol,
-            fiatAmount: receiveAmount.value.toString(),
+            fiatAmount: receiveAmount.decimal.toDouble().toString(),
             fiatCurrency: receiveAmount.currency.symbol,
             partnerPK: partnerAuthPk,
             bankAccount: validUser.accountNumber ?? '',

packages/espressocash_app/lib/features/ramp/partners/brij/services/brij_on_ramp_order_service.dart

@@ -123,9 +123,9 @@ class BrijOnRampOrderService implements Disposable {
           await _kycRepository.grantPartnerAccess(partnerAuthPk);
 
           final orderId = await _kycRepository.createOnRampOrder(
-            cryptoAmount: receiveAmount.value.toString(),
+            cryptoAmount: receiveAmount.decimal.toDouble().toString(),
             cryptoCurrency: receiveAmount.cryptoCurrency.token.symbol,
-            fiatAmount: submittedAmount.value.toString(),
+            fiatAmount: submittedAmount.decimal.toDouble().toString(),
             fiatCurrency: submittedAmount.currency.symbol,
             partnerPK: partnerAuthPk,
           );