[Bug]: SyntheticControl's Frank-Wolfe stops on its budget at the default inner_max_iter; in_space_placebo() then fails closed or drops placebos on 33-40 of 40 panels

[Bug]: SyntheticControl's Frank-Wolfe stops on its budget at the default inner_max_iter; in_space_placebo() then fails closed or drops placebos on 33-40 of 40 panels #2993