A test in the Belgian reports posting wizard was adjusted to ignore an internal testing flag related to unusual invoice amounts. This keeps automated checks focused on the intended behavior and prevents irrelevant test failures.

A new context key is added in the common test class for Accounting in order to avoid preventing posting invoices because the amount is unusual in tests: `disable_abnormal_invoice_detection`
So we avoid the content of such keys because it is not relevant to the scope of the test.

This fixes incorrect demo data used in Belgian payroll accounting tests. The change helps keep automated checks reliable and reduces the chance of false failures during development.

This fixes a display issue in the appointment booking date picker where January 12 could appear in the wrong position. The change helps users choose appointment dates more reliably and reduces confusion during booking.

problem: position of 12 January in datepicker

This update adjusts appointment-related automated tests to avoid failures around the New Year date change. It helps keep quality checks stable without changing the customer-facing appointment experience.