before this commit, if the entered attribute combination in
template is creating more than 1000 product, the operation
is prevented by raising UserError.
as of now, there is no option to increase or decrease the
limit if user need to do so.
system parameter: product.dynamic_variant_limit
after this commit, if user needs to increase or decrease
the limit, it can be done by adding a system parameter
and set the needed value
closesodoo/odoo#137783
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>