Terminating due to uncaught exception 0x5591874161a0 'mutex lock failed: Invalid argument' of type std::__1::system_error

This error is printed at the end of the process:

```
$ magika README
/usr/ports/README: Generic text document (text) [Low-confidence model best-guess: ReStructuredText document (text), score=0.465]
Terminating due to uncaught exception 0x5591874161a0 'mutex lock failed: Invalid argument' of type std::__1::system_error
Abort trap magika /usr/ports/README
```

In the debugger the crash looks like this:
```
[LWP 255731 of process 10831 exited]
[LWP 255734 of process 10831 exited]
[LWP 255747 of process 10831 exited]
[LWP 255724 of process 10831 exited]
[LWP 255723 of process 10831 exited]
[LWP 255718 of process 10831 exited]
[LWP 255742 of process 10831 exited]
[LWP 255738 of process 10831 exited]
[LWP 255735 of process 10831 exited]
[LWP 255733 of process 10831 exited]
[LWP 255721 of process 10831 exited]
[LWP 255736 of process 10831 exited]
[LWP 255722 of process 10831 exited]
[LWP 255744 of process 10831 exited]
[LWP 255719 of process 10831 exited]
[LWP 255728 of process 10831 exited]
[LWP 255740 of process 10831 exited]
[LWP 255743 of process 10831 exited]
[LWP 255725 of process 10831 exited]
[LWP 255741 of process 10831 exited]
[LWP 255749 of process 10831 exited]
Terminating due to uncaught exception 0x8030161a0 'mutex lock failed: Invalid argument' of type std::__1::system_error

Thread 1 received signal SIGABRT, Aborted.
Sent by thr_kill() from pid 10831 and user 1001.
0x0000000801568cfa in thr_kill () from /lib/libsys.so.7
(gdb) bt
#0 0x0000000801568cfa in thr_kill () from /lib/libsys.so.7
#1 0x0000000802a94904 in raise () from /lib/libc.so.7
#2 0x0000000802b470e9 in abort () from /lib/libc.so.7
#3 0x000000080153e041 in ?? () from /lib/libcxxrt.so.1
#4 0x000000080153c179 in std::terminate() () from /lib/libcxxrt.so.1
#5 0x0000000801a04f0e in ?? () from /usr/local/lib/libonnxruntime.so.1
#6 0x0000000802708f01 in ?? () from /usr/local/lib/libonnxruntime.so.1
#7 0x0000000801aabfa7 in ?? () from /usr/local/lib/libonnxruntime.so.1
#8 0x0000000801ad8566 in ?? () from /usr/local/lib/libonnxruntime.so.1
#9 0x0000000801ad8aec in ?? () from /usr/local/lib/libonnxruntime.so.1
#10 0x0000000801a21029 in ?? () from /usr/local/lib/libonnxruntime.so.1
#11 0x00000000013e2ebd in ?? ()
#12 0x00000000013e2de0 in ?? ()
#13 0x000000080146cd28 in ?? ()
#14 0x000000080145d28a in ?? () from /libexec/ld-elf.so.1
#15 0x0000000802f1f580 in ?? ()
#16 0x0000000000000330 in ?? ()
#17 0x00000008014711f0 in ?? ()
#18 0x00007fffffffdeb0 in ?? ()
#19 0x0000000000000003 in ?? ()
#20 0x0000000000000064 in ?? ()
#21 0x00007fffffffe2b0 in ?? ()
#22 0x0000000802ba3bf7 in ?? () from /lib/libc.so.7
#23 0x00000008014553d9 in ?? () from /libexec/ld-elf.so.1
#24 0x00007fffffffe320 in ?? ()
#25 0x0000000800000002 in ?? ()
#26 0x00000000000c8093 in ?? ()
#27 0x00000008029d1900 in ?? () from /usr/local/lib/libonnxruntime.so.1
#28 0x6eb21b43a48e6640 in ?? ()
#29 0x00000008029d1900 in ?? () from /usr/local/lib/libonnxruntime.so.1
#30 0x00007fffffffe350 in ?? ()
#31 0x00000008014a7469 in ?? () from /lib/libthr.so.3
#32 0x0000000802b47554 in __cxa_finalize () from /lib/libc.so.7
#33 0x0000000802b47a5c in exit () from /lib/libc.so.7
#34 0x0000000802a69146 in __libc_start1 () from /lib/libc.so.7
```

Version: 1.1.0
FreeBSD 15.1

The report names no source file or test. Reproduce `magika README` with version 1.1.0 on FreeBSD 15.1, then inspect the ONNX Runtime frames and process-exit path in the debugger. Done means the command exits without the uncaught mutex exception.

Written by the indexing model from the issue text.