Pass pathFilters as an array

[hoelzro]

Otherwise, when we try to iterate over pathFilters in the filesystem
utils module, we end up iterating over each character in the filter
string, which ends up generating 'Filter error_ Missing [ in filter
expression.tid' as the tiddler's filename

Fixes GH #4173

[Jermolene]

Thanks @hoelzro that's definitely an oversight. The docs say that the tiddler should be a newline delimited list of filters so perhaps we can fix it like this:

		// Otherwise, we'll need to generate it
		fileInfo = $tw.utils.generateTiddlerFileInfo(tiddler,{
			directory: $tw.boot.wikiTiddlersPath,
			pathFilters: this.wiki.getTiddlerText("$:/config/FileSystemPaths","").split("\n"),
			wiki: this.wiki
		});

[hoelzro]

Oh, great point @Jermolene - I didn't realize that there could be more than one filter! I'll fix that up right away.

[hoelzro]

@Jermolene Alright, I've applied your suggestion - thanks!

[hoelzro]

@Jermolene How does the revised change look to you?

[Jermolene]

Thanks @hoelzro