Comment 1 for bug 1983306

Reproduced with:

```bash
cat > /tmp/lp1983306 <<EOF
#include
http://www.canonical.com
EOF

lxc launch ubuntu-daily:kinetic lp1983306
lxc file push /tmp/lp1983306 lp1983306/root/
lxc exec lp1983306 -- cloud-init status --wait

$ lxc exec lp1983306 -- cloud-init --version
/usr/bin/cloud-init 22.2-64-g1fcd55d6-0ubuntu1~22.10.1

$ lxc exec lp1983306 -- cloud-init schema -c /root/lp1983306
Error:
Cloud config schema errors: format-l1.c1: File /root/lp1983306 needs to begin with "#cloud-config"

$ lxc exec lp1983306 -- cloud-init schema -c /root/lp1983306 --annotate
#include # E1
http://www.google.com

# Errors: -------------
# E1: File /root/lp1983306 needs to begin with "#cloud-config"
```

Note that the query command does also not resolve include directives:

```bash
$ lxc exec lp1983306 -- cloud-init query -u /root/lp1983306 userdata.asdf
Traceback (most recent call last):
  File "/usr/bin/cloud-init", line 33, in <module>
    sys.exit(load_entry_point('cloud-init==22.2', 'console_scripts', 'cloud-init')())
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 1063, in main
    retval = util.log_time(
  File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2621, in log_time
    ret = func(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/query.py", line 291, in handle_args
    response = _find_instance_data_leaf_by_varname_path(
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/query.py", line 230, in _find_instance_data_leaf_by_varname_path
    jinja_vars_with_aliases = jinja_vars_with_aliases[key_path_part]
TypeError: string indices must be integers
```