type: Fix _is_byte_order_comparable calculation
type: Fix _is_byte_order_comparable calculation

Because the length preceeds component contents, serialized tuples are
not byte order comparable. It breaks lexi ordering. It should be that
"abc" < "b", but with length prefix "<3>abc" is greater than
"<1>b". Only single element tuples can be byte order capared because
they have no length component.

Spotted during code review.

linearregression/scylla,wildinto/scylla,rentongzhang/scylla,shaunstanislaus/scylla,kangkot/scylla,avikivity/scylla,duarten/scylla,justintung/scylla,capturePointer/scylla,linearregression/scylla,rluta/scylla,stamhe/scylla,aruanruan/scylla,raphaelsc/scylla,duarten/scylla,scylladb/scylla,respu/scylla,acbellini/scylla,tempbottle/scylla,bowlofstew/scylla,avikivity/scylla,kangkot/scylla,eklitzke/scylla,dwdm/scylla,senseb/scylla,rluta/scylla,bowlofstew/scylla,justintung/scylla,kjniemi/scylla,capturePointer/scylla,rluta/scylla,duarten/scylla,victorbriz/scylla,shaunstanislaus/scylla,glommer/scylla,guiquanz/scylla,gwicke/scylla,kangkot/scylla,shaunstanislaus/scylla,tempbottle/scylla,senseb/scylla,victorbriz/scylla,eklitzke/scylla,senseb/scylla,justintung/scylla,gwicke/scylla,wildinto/scylla,dwdm/scylla,linearregression/scylla,eklitzke/scylla,wildinto/scylla,asias/scylla,glommer/scylla,phonkee/scylla,raphaelsc/scylla,guiquanz/scylla,victorbriz/scylla,gwicke/scylla,avikivity/scylla,acbellini/scylla,guiquanz/scylla,respu/scylla,scylladb/scylla,rentongzhang/scylla,respu/scylla,dwdm/scylla,raphaelsc/scylla,rentongzhang/scylla,stamhe/scylla,stamhe/scylla,aruanruan/scylla,asias/scylla,capturePointer/scylla,aruanruan/scylla,scylladb/scylla,glommer/scylla,phonkee/scylla,acbellini/scylla,kjniemi/scylla,kjniemi/scylla,bowlofstew/scylla,tempbottle/scylla,phonkee/scylla,scylladb/scylla,asias/scylla