any_is_na_linter() should throw for NA %in% x

[MichaelChirico]

Originally posted by @AshesITR in #2112 (review)

[MichaelChirico]

There are definitely hits on GitHub, though not a ton:

https://github.com/search?q=lang%3AR+%2F%5B%5Ea-z0-9._%5DNA%28_%28integer%7Creal%7Ccomplex%7Ccharacter%29_%29%3F%5Cs*%5B%25%5D%28ch%29%3Fin%5B%25%5D%2F&type=code

Note there are false positives in the search because GH search cannot be made case-sensitive AFAIK.