Product purchases and sales document coverage, and batch flow fix

We improved product pages for better visibility and performance:

• Purchases/Sales coverage: product tabs now include all lines from DL (Delivery Note), DN (Goods Receipt Note), PI (Purchase Invoice), and SE (Sales Invoice) documents.
• Movement pagination: movement lists are now paginated for better scalability.
• Batch selling flow fix: for batch-tracked products, batch selection during sales is now consistent and correctly saved.