fix: repair lease status, invoicing and report defects

[av-dev2]

Functional defects found while building the version-16 test suite. Each one is
covered by a test in the suite PR, and each was reproduced on the v16 test bench
before it was fixed.

Lease status was never set

Lease.validate() called set_lease_status() after the active-lease limit
check, and set_lease_status() treated a blank status as a manual choice and
returned early. A newly inserted Lease therefore kept lease_status = ""
forever, which silently disabled four features at once:

• the configurable max active leases limit (it only runs when the status is
  already Active, which never happened on insert);
• lease renewal — initiate_lease_renewal rejects anything that is not
  Active or Expired;
• the daily status scheduler, whose filter is lease_status in (Upcoming, Active, Expired);
• the property increment engine, which only walks Active leases.

The status is now resolved first, and a blank status is treated as
system-controlled rather than manual.

Everything else

File	Defect
auto_custom.py	invoice schedule rows were written with parenttype="lease" (lowercase), so any parent_doctype-scoped query missed them
lease_invoice.py	the final flush of leaseInvoiceAutoCreate dereferenced invoice_item when the schedule was empty; a failing invoice was swallowed with no visible trace. The flush is guarded, validation errors now propagate out of makeInvoice, and batch failures are written to the Error Log. A duplicated parent field was removed from the query
lease_invoice_schedule.py	frappe.db.sql(query.get_sql()) replaced with query.run()
mis_income_break_up/other_methods.py	the loop that computes withholding tax iterated over the row label as well, so the report died with could not convert string to float: 'Total Rentals Received' on every run
subscription_service_report	the filter definition was missing a comma before get_query, so the whole file failed to parse and the report had no filters; the SQL also selected item_name from tabSales Invoice, where that column does not exist
daily_checklist, outsourcing_attendance, security_attendance	autoname: naming_series: with a Data field that had no options — inserting any of them failed with Naming Series mandatory, which also broke the Handover checklist that Lease.on_submit creates
property_tree.js	the new-node dialog sent property_name, but Property is named from name1, so creating a property from the tree view failed with Name is required
issue.js	the stock shortage message interpolated into __() instead of passing placeholders

Depends on #75.