Changed the BOM scrap item to BOM Secondary item

[IshwaryaM1030]

Closes #341

[github-actions]

Draft Changelog Entry

Changelog

The system's handling of secondary materials in Bills of Materials (BOM) has been updated. The "BOM Scrap Item" designation has been renamed to "BOM Secondary Item" throughout the application. This change affects how secondary materials are tracked and processed in handling units and stock entries. The underlying functionality remains consistent with the previous implementation, with updates made to configuration files, processing logic, and related test cases to reflect the new terminology.

This changelog entry was automatically generated by the Changelog Generator Action.

[github-actions]

Coverage Report •

File	Stmts	Miss	Cover	Missing
beam
handling_unit.py	76	37	51%	29, 32, 53–55, 75, 86–87, 93–94, 96–97, 99–100, 102–103, 105, 107–110, 112–114, 116, 118, 120–121, 126, 128, 132, 134–135, 138, 140–141, 149
beam/overrides
stock_entry.py	93	17	82%	115–116, 121–128, 134–135, 151, 169, 186, 189–190
beam/scan
__init__.py	204	37	82%	23, 33, 89–91, 167–168, 178, 180–181, 185, 189–190, 193, 199, 240, 249, 255, 279, 281, 308, 310–311, 317–324, 331, 339, 353, 459, 467, 474
tests
test_handling_unit.py	468	59	87%	18–19, 21–22, 546, 570, 611, 621, 648, 651–652, 655–664, 672–675, 684–686, 688–689, 691–693, 701, 708, 710–716, 718, 729–732, 741–744, 746–748, 756, 763–765, 767
TOTAL	3426	905	74%