Fix words() with no args test
Fix words() with no args test

The test was added[^1] 1 month ago and is not part of 6.c-errata.

CatHandle'd argfiles are instantiated with positionals and
not :args[] attr

[1] https://github.com/perl6/roast/commit/8f78ca604c3edbd7b4eb9c9b3f5

dogbert17/roast,bitrauser/roast,bitrauser/roast,perl6/roast,dogbert17/roast