Steps followed to reproduce the issue on bothe RHEL 9 & RHEL 8:
(as root)
1. # cd /opt/rh
2. # unzip jbcs-httpd24-httpd-2.4.62-RHEL8-x86_64.zip
3. # cd jbcs-httpd24-2.4/httpd
4. # ./.postinstall

5] On RHEL8
~~~
[root@localhost httpd]# /opt/rh/jbcs-httpd24-2.4/httpd/sbin/apachectl -t -f /opt/rh/jbcs-httpd24-2.4/httpd/conf/httpd.conf
[root@localhost httpd]# /opt/rh/jbcs-httpd24-2.4/httpd/sbin/httpd -t -f /opt/rh/jbcs-httpd24-2.4/httpd/conf/httpd.conf
Syntax OK
[root@localhost httpd]# cat /etc/os-release
NAME="Red Hat Enterprise Linux"
VERSION="8.10 (Ootpa)"
ID="rhel"
ID_LIKE="fedora"
VERSION_ID="8.10"
...
~~~

On RHEL 9:
~~~
[root@ibm-p8-kvm-03-guest-02 httpd]# /opt/rh/jbcs-httpd24-2.4/httpd/sbin/httpd -t -f /opt/rh/jbcs-httpd24-2.4/httpd/conf/httpd.conf
Syntax OK
[root@ibm-p8-kvm-03-guest-02 httpd]# /opt/rh/jbcs-httpd24-2.4/httpd/sbin/apachectl -t -f /opt/rh/jbcs-httpd24-2.4/httpd/conf/httpd.conf
Syntax OK
[root@ibm-p8-kvm-03-guest-02 httpd]# cat /etc/os-release
NAME="Red Hat Enterprise Linux"
VERSION="9.5 (Plow)"
ID="rhel"
ID_LIKE="fedora"
VERSION_ID="9.5"
...
~~~

• `/sbin/apachectl -t` do not work on RHEL 8.