Merge branch 'ks/ref-filter-sort-numerically' into maint-2.42

"git for-each-ref --sort='contents:size'" sorts the refs according to size numerically, giving a ref that points at a blob twelve-byte (12) long before showing a blob hundred-byte (100) long. * ks/ref-filter-sort-numerically: ref-filter: sort numerically when ":size" is used