bootc switch --mutate-in-place failed on Fedora 42

Run bootc switch on fedora-bootc:42 system. Failed to run with `--mutate-in-place`.

```shell
[fedora@fedora ~]$ sudo bootc switch --mutate-in-place --transport registry quay.io/fedora/fedora-bootc:42
ERROR Switching: Writing origin: Read-only file system (os error 30)
```

```shell
[fedora@fedora ~]$ sudo bootc switch --transport registry quay.io/fedora/fedora-bootc:42
layers already present: 0; layers needed: 65 (820.2 MB)
Fetching layers ░░░░░░░░░░░░░░░░░░░░ 1/65
└ Fetching ░░░░░░░░░░░░░░░░░░░░ 1.13 MiB/63.27 MiB (34.73 MiB/s) ostree chunk 66763e94edad66cd05972
```

It's on Fedora 42 only.