Takes the topmost item and evaluates it as a PumpkinScript program on the current stack with a clone of the dictionary
Output stack: result of
EVAL/SCOPED is a sister version of EVAL with
one important distinction: all new words defined inside
(or updated values for previously defined ones) within this
evaluation (using SET and DEF) will be
gone after the evaluation.
PumpkinDB> 1 'val SET [2 'val SET val] EVAL/SCOPED val 2 1
Allocates a copy of the code (this might change in the future) during the runtime.
EmptyStack error if there is less than one item on the stack
eval_scoped_clone : "scoped_dictionary" FEATURE? [1 'val SET [2 'val SET val] EVAL/SCOPED val 2 WRAP 2 1 2 WRAP EQUAL?]  IFELSE.