Satellite 6 generated RHEL 9 build ISO fails to boot on EFI system with as can not find linuxefi, initrdefi, or mmx64.efi

Issue

• Satellite 6 generated RHEL build ISO fails to boot on EFI system with "can't find command 'linuxefi'" or "can't find command 'initrdefi'"

• Satellite 6 generated RHEL install ISO fails to boot on EFI system at grub with following errors seen on console

  error: can't find command 'linuxefi'.
  error: can't find command 'initrdefi'.
  

• Satellite 6 generated RHEL install ISO fails to boot on Secure Boot enabled EFI system at grub with following errors seen on console about mmx64.efi Not Found.

  ERROR: Verification failed: (0x1A) Security Violation
  <OK>
  Failed to load image: Security Policy Violation
  Failed to open \EFI\BOOT\mmx64.efi - Not Foundecurity Violation
  Failed to load image \EFI\BOOT\mmx64.efi: Not Found
  start_image() returned Not Found
  BdsDxe: No bootable option or device was found.
  BdsDxe: Press any key to enter the Boot Manager Menu