[Feat] Notify mrp manager when bom1 update

I chose to implement it by overwriting the write function, because the save button is in the base.xml file and cannot be fetched with xpath. I also didn't want to write any jAvAsCrIpt code to fetch it because it would be too complicated.

assigned to @asas1asas200

assigned to @rexwu and unassigned @asas1asas200

requested review from @rexwu

approved this merge request

mentioned in commit 92e4ea1c

merged