[Bug]: Missing Blocked Check for the Bill-to Customer in Job

Describe the issue

In the job table the Sell-to Customer No. is checked when it's validated wether the customer is blocked, but the bill-to customer no. isn't checked for the Blocked value of the customer.

This is issue is a follow up to issue: https://github.com/microsoft/BusinessCentralApps/issues/1837

Expected behavior

I would suggest to bring back a Blocked check in the Bill-To customer no. field and align with the check on sales orders.

Steps to reproduce

• Create a job
• Create a not blocked customer for Sell-to
• Create a blocked customer for Bill-to
• Validate the Sell-to
• // [WHEN] The Bill-to is validated
• // [THEN] We would expect an error when a blocked customer is validated as bill-to

Additional context

I guess that this issue was created when the Job table was improved by having a sell-to cutomer no addtional to the bill-to customer no.

When you check the source for BC19 then you will see that there was a check for the bill-to customer no.
https://github.com/StefanMaron/MSDyn365BC.Code.History/blob/w1-19/BaseApp/Source/Base%20Application/Job.Table.al

            if Cust.Blocked = Cust.Blocked::All then
                Error(
                  BlockedCustErr,
                  FieldCaption("Bill-to Customer No."),
                  "Bill-to Customer No.",
                  Cust.TableCaption,
                  FieldCaption(Blocked),
                  Cust.Blocked);

This is the code in the Job Table in current BC:

        if Job."Sell-to Customer No." <> '' then begin
            SellToCustomer.Get(Job."Sell-to Customer No.");
            IsHandled := false;
            OnValidateSellToCustomerNoOnBeforeCheckBlockedCustOnDocs(Rec, SellToCustomer, IsHandled);
            if not IsHandled then
                SellToCustomer.CheckBlockedCustOnDocs(SellToCustomer, Enum::"Sales Document Type"::Order, false, false);
        end;

I will provide a fix for a bug

• I will provide a fix for a bug

Start in the current Job table at the Sell-to Customer No. validation entry point and compare it with the historical BaseApp/Source/Base Application/Job.Table.al snippet. Trace the Bill-to Customer No. validation and existing blocked-customer checks; done means a blocked bill-to customer produces the expected error, with coverage in the relevant Job table tests if present.