feat(selling): allow disabling a Product Bundle

Un-deprecate the `disabled` checkbox: it is now editable (also after
submit) and parks a bundle version without ceding its active slot, so
re-enabling restores it without re-activation.

- `get_active_product_bundle` (the single resolution entry point) skips
  disabled bundles, so every consumer stops treating the item as a bundle
  while it is disabled
- the version pickers on transaction item rows and the buying "Get Items
  from Product Bundle" dialog filter out disabled bundles
- an explicitly selected disabled version blocks the transaction with a
  validation error instead of silently re-packing another version
- Product Bundle Balance report excludes disabled bundles
- list view indicator: Disabled (grey) / Active (green), falling back to
  docstatus for drafts, cancelled and inactive submitted versions

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
(cherry picked from commit cf37478870)

# Conflicts:
#	erpnext/controllers/selling_controller.py
#	erpnext/public/js/controllers/transaction.js
#	erpnext/selling/doctype/product_bundle/product_bundle.json
#	erpnext/selling/doctype/product_bundle/product_bundle.py
#	erpnext/stock/doctype/packed_item/packed_item.py
#	erpnext/stock/report/product_bundle_balance/product_bundle_balance.py

erpnext/controllers/selling_controller.py

@@ -425,7 +425,16 @@ class SellingController(StockController):
 			row.new_item_code
 			for row in frappe.get_all(
 				"Product Bundle",
+<<<<<<< HEAD
 				filters={"new_item_code": ("in", items_to_fetch), "disabled": 0},
+=======
+				filters={
+					"new_item_code": ("in", items_to_fetch),
+					"is_active": 1,
+					"docstatus": 1,
+					"disabled": 0,
+				},
+>>>>>>> cf37478870 (feat(selling): allow disabling a Product Bundle)
 				fields="new_item_code",
 			)
 		}