fix(traversing): Make filter work on all collections

[fb55]

Fixes #1867

[sehrgut]

This should also iterate over comment nodes. It doesn't appear to do that.

[fb55]

@sehrgut This PR removes the restrictions for all set types. With this PR, you can iterate over a Cheerio<number> without issue. TS doesn't like this (yet), but this runs in pure JS:

$([1,2,3,4,5]).filter((_,n)=>n%2).toArray()
//=> [1,3,5]

[sehrgut]

Ah! I see that now. I think I assumed from the new imports list import { Node, Element, Text, isText } from 'domhandler'; that those would be the only ones picked up by AcceptedFilters<T>. Thank you!