Issues-767: change the 'each' signature to work with arrays

[sergeevik]

Change 'each' signature for correct work by docs. (#767)
Docs say: https://docs.jsonata.org/programming

Invocation chaining
value ~> $funcA ~> $funcB
is equivalent to
$funcB($funcA(value))

fix it for 'each' method
now
$each([123, 321], function($v) {$v}) and [123, 321] ~> $each(?, function($v) {$v}) are equivalent

Signed-off-by: Sergeev Viktor sergeevviktor017@gmail.com