Avoid filtering Attribute Filter options when query type is OR

[Aljullu]

Fixes #1338.

Note: this was fixed in master in #1309, so there is no need to cherry-pick this PR.

Screenshots

Options should only be hidden when Query Type is AND:

How to test the changes in this Pull Request:

1. Create a post with a Filter Products by Attribute block and set Query Type to OR.
2. Preview the post and check one of the options.
3. Verify other options don't disappear.

Changelog

Prevent Filter Products by Attribute block hiding non-matching options when Querty Type is set to OR.

[nerrad]

Seems to work okay! One thing I am wondering about though:

• this seems like something that should be able to optionally be exposed to the potential customer to choose how the filtering applies. There's no ui/ux indicators that indicate what type of query is being done. Should there be?
• The active filter doesn't distinguish the type of filtering being done and that may be a place where it can be indicated.

Both the above are things that probably should have follow-up issues created (and not necessary for 2.5.x release).

[Aljullu]

Agree @nerrad! I created two issues: #1340 and #1341 to track it.