Add a hidden variable in the grid (product_supplier_ids), which represents our domain. This variable will change dynamically every time I select a different vendor in mask.

class AccountMoveLine(models.Model):
    _inherit = 'account.move.line'
    product_supplier_ids = fields.Many2many('product.product', compute='_compute_product_supplier_ids')
    
    @api.depends('move_id.partner_id')
    def _compute_product_supplier_ids(self):
        for account_move_line_id in self:
            ids_of_product_suppliers = []
            
            if bool(account_move_line_id.move_id.partner_id.supplier_to_product_ids):
                for supplier_product_id in account_move_line_id.move_id.partner_id.supplier_to_product_ids:
                    ids_of_product_suppliers.append(supplier_product_id.product_id.id)
            else: 
                ids_of_product_suppliers = self.env['product.product'].search([]).ids
            
            account_move_line_id.product_supplier_ids = [(6, 0, ids_of_product_suppliers)]



<record id="view_move_form_supplier_to_product" model="ir.ui.view">
		<field name="name">account.move</field>
		<field name="model">account.move</field>
		<field name="inherit_id" ref="account.view_move_form" />

		<field name="arch" type="xml">
			<xpath expr="//page[@id='invoice_tab']/field[@name='invoice_line_ids']//tree/field[@name='product_id']"
				position="replace">
				<field name="product_supplier_ids" />
				<field name="product_id" domain="[('id', 'in', product_supplier_ids)]" />
			</xpath>
		</field>
	</record>