Avoid null column showing on groups search page

[braders]

Overview

Avoid null column showing on groups search page.

Before

Currently, if you setup a child group (e.g. a mailing group) and then try to view that group, an extra column is shown with the text content "null". For example, as seen on dmaster:

After

The extra "null" column does not appear:

Technical Details

The group search page had some JavaScript checking whether "0" or "1" were truthy. As both were strings both were truthy. Therefore, now a proper boolean is used which works correctly.

Comments

I belive the extra column is intended to show the organisation in a multisite setup. I don't have such a site to hand to test with, so whilst I'm reasonably confident it might be nice for someone to sense-check it all looks good from that angle.

I've also removed the empty() check whilst I'm here as it's problamatic with the new escaping mode. $showOrgInfo appears to always be set to either true or false.

[civibot]

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[demeritcowboy]

I'm not sure about the multisite but this works. Cross-ref'ing to https://lab.civicrm.org/dev/core/-/issues/3071