Billing: Always call CalculateBuckets() when Calculate() is called to avoid user confusion

Elwig/Helpers/Billing/BillingVariant.cs

@@ -21,6 +21,11 @@ namespace Elwig.Helpers.Billing {
         public async Task Calculate() {
             using var cnx = await AppDbContext.ConnectAsync();
             using var tx = await cnx.BeginTransactionAsync();
+            await CalculateBuckets(
+                Season.Billing_AllowAttrsIntoLower,
+                Season.Billing_AvoidUnderDeliveries,
+                Season.Billing_HonorGebunden,
+                cnx);
             await DeleteInDb(cnx);
             await SetCalcTime(cnx);
             await CalculatePrices(cnx);