Use the right block template when a BP Directory is set as home page with a Block Theme

[imath]

12.0 introduced a regression about the template used when a BP Directory is set as home page. This issue was discussed during January 8, 2024 dev-chat. Many thanks to @emaralive for his report.

Issue is: only overriding the $wp_query->is_home global is misleading these kind of themes, the $wp_query->is_front_page property also needs to be set as true.

Make sure Block Themes are using the right template to display a BP Directory when it is set as the site's front page.

Trac ticket: ​https://buddypress.trac.wordpress.org/ticket/9067

[imath]

In 13694:

Block Themes: use the right template when a BP Directory is front page

Only overriding the $wp_query->is_home property is misleading the template pick for these kind of themes, the $wp_query->is_front_page property also needs to be set as true.

Props emaralive

See #9067 (trunk)
Closes ​https://github.com/buddypress/buddypress/pull/216

[imath]

In 13695:

Block Themes: use the right template when a BP Directory is front page

Only overriding the $wp_query->is_home property is misleading the template pick for these kind of themes, the $wp_query->is_front_page property also needs to be set as true.

Props emaralive

Fixes #9067 (branch 12.0)