Add a Deselect option for unassigning batch/serial numbers from a BOM Build

Currently, when building a BOM within Record Built Items, serial numbered components are auto-selected. Sometimes this is fine but sometimes it is not correct. Although you can manually change these if you have 600 (in the case of my client) they would like to be able to deselect all in one go rather than one by one. Please can a Deselect All button be added.