Incorrect docs for `$number` argument in `WP_Site_Query`

[flixos90]

The docs for the $number argument of WP_Site_Query are wrong. The default value is 100, not null as it currently states.

[flixos90]

37621.diff​ fixes the docs.

[flixos90]

I actually think that is a strange default though. It should probably rather be null, as in other queries, not limiting anything. Was there any particular reason for specifying 100 here?

[swissspidy]

Introduced in [37477] / #35791.

I assume 100 was chosen as a sane default for huge networks. For example, posts_per_page in WP_Query is limited to.

35791.4.patch:ticket:35791​ was the first patch with that limit. See 12:ticket:35791.

[SergeyBiryukov]

On a related note, in WP_Network_Query, $number should be Default empty rather than Default null.

[flixos90]

37621.2.diff​ fixes the $number docs in WP_Network_Query, and also in WP_Comment_Query (same mistake there).

[wonderboymusic]

In 38336:

Query: use correct description in the docblock for $number in WP_Comment_Query, WP_Network_Query, and WP_Site_Query.

Props flixos90.
Fixes #37621.