Search behavior with filters is inconsistent

[chexee]

If you search from within a Post or Page filter, the returned search results are from within that filter.

For example, if you click on the "Drafts" filter and use the searchbox, the search results will only return results within "Drafts".

When searching Media, search results always return all results within Media, regardless of filter. If I click the "Images" filter and use the searchbox, it returns search results from all media.

[helenyhou]

Add post_mime_type and detached for the media library

[chexee]

19452.diff wfm :)

[helenyhou]

Let's do it? Consistency is good.

[ryan]

In [21750]:

Remove the filter setting when searching media. Props helenyhou. fixes #19452