Manufacturing order on_change needs to update product quantity

[Kyle Waid]

Manufacturing order does not onchange product quantity.

Create product A, UOM=PCE, Rounding Precision=1, Reference for Category. Name=55 LB Bag

Create product B UOM=LB, Rounding Precision=0.010, Reference for Category. Name=1LB

Create Bill of Materials. consume 1 of product A. Produces 55 of product B.

Create manufacturing order. Select BOM. Item default quantity selected is 1, but should be 55.

Not properly detecting the unit quantity will cause a piece with RP=1 to be partially broken. If the onchange properly selected the unit quantity as defined in the parent BOM RP would = 1.0

Additionally, there should be a check. Check if manufacturing order will break 1.0 RP. If so, raise error. Allowing breakage of 1PC will corrupt the database, and the companies stock