* system-program: Move lamports == 0 check on transfers
* Address feedback
* Update stake split to explicitly allocate + assign
* Update stake tests referring to split instruction
* Revert whitespace
* Update split instruction index in test
* Remove unnecessary `assign_with_seed` from `split_with_seed`
* Fix stake instruction parser
* Update test to allow splitting into account with lamports
(cherry picked from commit 8f5e773caf)
Co-authored-by: Jon Cinque <jon.cinque@gmail.com>