[FIX] mrp_account: copy analytic account when duplicating a BoM

Steps to reproduce the bug:
- Install mrp_plm
- Create a BoM with an analytic account
- Create an ECO
- Start the revision

Problem:
The new BoM version doesn't have the analytic account from the original
one.

opw-3329901

closes odoo/odoo#124841

Signed-off-by: William Henrotin (whe) <whe@odoo.com>

addons/mrp_account/models/mrp_bom.py

@@ -6,5 +6,5 @@ from odoo import fields, models
 class MrpBom(models.Model):
     _inherit = 'mrp.bom'
 
-    analytic_account_id = fields.Many2one('account.analytic.account', 'Analytic Account', company_dependent=True,
+    analytic_account_id = fields.Many2one('account.analytic.account', 'Analytic Account', company_dependent=True, copy=True,
         help="Analytic account in which cost and revenue entries will take place for financial management of the manufacturing order.")