Description:
when using linux-rt-lts (5.15.95.60.realtime1-1-rt-lts) kernel, I can't use bootctl, but with linux-zen 6.2.1 bootctl works fine.

Additional info:
* linux-rt-lts 5.15.95.60.realtime1-1
* systemd 253-1

Steps to reproduce:
- install linux-rt-lts kernel;
- boot it;
- run $ sudo bootctl

This is bootctl output with linux-rt-lts kernel:

```
System:
Firmware: n/a (n/a)
Firmware Arch: x64
Secure Boot: disabled (unsupported)
TPM2 Support: no
Boot into FW: not supported

Current Boot Loader:
Product: n/a
Features: ✗ Boot counting
✗ Menu timeout control
✗ One-shot menu timeout control
✗ Default entry control
✗ One-shot entry control
✗ Support for XBOOTLDR partition
✗ Support for passing random seed to OS
✗ Load drop-in drivers
✗ Support Type #1 sort-key field
✗ Support @saved pseudo-entry
✗ Support Type #1 devicetree field
✗ Boot loader sets ESP information
ESP: n/a
File: └─n/a

Random Seed:
System Token: not set
Exists: yes

Available Boot Loaders on ESP:
ESP: /boot (/dev/disk/by-partuuid/44ef5eda-0d75-fb45-9713-9539b4303475)
File: ├─/EFI/systemd/systemd-bootx64.efi (systemd-boot 253-1-arch)
└─/EFI/BOOT/BOOTX64.EFI (systemd-boot 253-1-arch)

No boot loaders listed in EFI Variables.

Boot Loader Entries:
$BOOT: /boot (/dev/disk/by-partuuid/44ef5eda-0d75-fb45-9713-9539b4303475)
token: arch

Default Boot Loader Entry:
type: Boot Loader Specification Type #1 (.conf)
title: Arch Linux Zen
id: zen.conf
source: /boot//loader/entries/zen.conf
linux: /boot//vmlinuz-linux-zen
initrd: /boot//intel-ucode.img
/boot//initramfs-linux-zen.img
```

This is on a system with linux-zen kernel (similar system, but shows the same behavior with bootctl and linux-rt-lts, and linux-zen kernels):
```
System:
Firmware: UEFI 2.70 (American Megatrends 5.17)
Firmware Arch: x64
Secure Boot: disabled (setup)
TPM2 Support: no
Boot into FW: supported

Current Boot Loader:
Product: systemd-boot 253-1-arch
Features: ✓ Boot counting
✓ Menu timeout control
✓ One-shot menu timeout control
✓ Default entry control
✓ One-shot entry control
✓ Support for XBOOTLDR partition
✓ Support for passing random seed to OS
✓ Load drop-in drivers
✓ Support Type #1 sort-key field
✓ Support @saved pseudo-entry
✓ Support Type #1 devicetree field
✓ Boot loader sets ESP information
ESP: /dev/disk/by-partuuid/58a69e6c-84c2-fc48-be11-2d0c163b4900
File: └─/EFI/BOOT/BOOTX64.EFI

Random Seed:
System Token: set
Exists: yes

Available Boot Loaders on ESP:
ESP: /boot (/dev/disk/by-partuuid/58a69e6c-84c2-fc48-be11-2d0c163b4900)
File: ├─/EFI/systemd/systemd-bootx64.efi (systemd-boot 253-1-arch)
└─/EFI/BOOT/BOOTX64.EFI (systemd-boot 253-1-arch)

Boot Loaders Listed in EFI Variables:
Title: UEFI OS
ID: 0x0002
Status: active, boot-order
Partition: /dev/disk/by-partuuid/58a69e6c-84c2-fc48-be11-2d0c163b4900
File: └─/EFI/BOOT/BOOTX64.EFI

Title: Linux Boot Manager
ID: 0x0001
Status: active, boot-order
Partition: /dev/disk/by-partuuid/58a69e6c-84c2-fc48-be11-2d0c163b4900
File: └─/EFI/systemd/systemd-bootx64.efi

Boot Loader Entries:
$BOOT: /boot (/dev/disk/by-partuuid/58a69e6c-84c2-fc48-be11-2d0c163b4900)
token: arch

Default Boot Loader Entry:
type: Boot Loader Specification Type #1 (.conf)
title: Arch Linux Realtime LTS
id: rt.conf
source: /boot//loader/entries/rt.conf
linux: /boot//vmlinuz-linux-rt-lts
initrd: /boot//intel-ucode.img
/boot//initramfs-linux-rt-lts.img
```