In an editable list, select a very long value in a many2one...
Before this commit, the table stretched as much as it needed to to
display all of the columns content.
Now, the largest columns are trimmed in order to keep the table
as wide as the list container (meaning it won't overflow anymore
unless there is a huge load of columns).
Also ensured that values trimmed by this feature are followed
by an ellipsis.
Task 2068261
Co-authored-by: Aaron Bohy <aab@odoo.com>
