bug#64794: Guile 3.0.9 in guix shell container with emulated FHS throws ldconfig error @ a050897

[Rostislav Svoboda]

The warning appears also for guile@2.0 and later. guile@1.8 works fine:

```
$ guix shell --emulate-fhs --container guile@1.8
[env]$ exit
$ guix shell --emulate-fhs --container guile@2.0
ldconfig: /lib/libguile-2.0.so.22.8.1-gdb.scm is not an ELF file - it
has the wrong magic bytes at the start.

[env]$
```