feat: 在充值提交后添加提示，告知用户申请已提交

src/views/recharge/index.vue

@@ -137,6 +137,7 @@ async function handleSubmit() {
             amount: String(amount),
             paymentChannel: selectedPaymentType.value!,
           }));
+          showToast("充值申请已提交，请等待处理");
           rechargeAmount.value = "";
           selectedPaymentType.value = null;
           selectedPaymentId.value = null;