Add test(s) for SA-CORE-2023-004

Removing credit for myself as the reroll was minimal.

Going to call this RTBC on the basis that it's a very simple addition to an existing test that's already been reviewed by a number of contributors in the private security issue.

Sorry - didn't notice that @smustgrave had already marked it RTBC.

The last submitted patch, 5: 3358533-5.patch, failed testing. View results →

Failing test is irrelevant. RTBC+1

Depending on who get's merged first, there will probably be a conflict between this issue and 📌 Make phpinfo on the admin status report configurable Fixed as they seem to add the same assertions.

Duplicate, this was already fixed in 📌 Make phpinfo on the admin status report configurable Fixed

The tests added in the other issue were specifically for when the sa_core_2023_004_phpinfo_flags setting is used to override the (new) default.

The lines added in this issue test that default and are very slightly different; we don't want the phpinfo page to contain $_COOKIE by default.

Needs work then since because of the other issue the patch no longer applies