The vi binary is missing in the initrd.img of Red Hat Enterprise Linux 9.0

Issue

• The vi command cannot work in the initial ram image generated by dracut.
• It happens with initrd.img for the installation and the initramfs-*.img generated during and after the installation.
• /usr/bin/vi is just a wrapper shell script to run /usr/libexec/vi.
• /usr/bin/vi is available in the initial ram image, but /usr/libexec/vi is not.