fix: improve "Update Items" modal (#36105)

* fix: make "Update Items" modal larger

* fix: remove conversion factor from overview

Conversion factor doesn't make much sense without two different UOMs
next to it, hence moving it to row detail view

erpnext/public/js/utils.js

@@ -632,14 +632,14 @@ erpnext.utils.update_child_items = function(opts) {
 		fields.splice(3, 0, {
 			fieldtype: 'Float',
 			fieldname: "conversion_factor",
-			in_list_view: 1,
 			label: __("Conversion Factor"),
 			precision: get_precision('conversion_factor')
 		})
 	}
 
 	new frappe.ui.Dialog({
 		title: __("Update Items"),
+		size: "extra-large",
 		fields: [
 			{
 				fieldname: "trans_items",