`podman-compose systemd` generates unit files assuming podman executable at `/usr/bin/podman`, instead of the actual path `/usr/local/bin/podman`

[ccll]

Describe the bug
I have a docker-compose project migrated to podman-compose, trying to generate systemd unit files, but the podman path is wrong in all the unit files.

To Reproduce
Steps to reproduce the behavior:

1. the current working directory have docker-compose.yml which defines a single service.
2. run podman-compose up -d to bring up the service container
3. run podman-compose systemd -a create-unit and podman-compose systemd -a register to generate the systemd unit files
4. the generated unit file have a line ExecStartPre=/usr/bin/podman pod start pod_%i, but my podman executable is actually installed at /usr/local/bin/podman, so the unit file would fail to start.

please use minimal reproducible example for example give me a small busybox-based compose yaml

Expected behavior
The systemd service should start without problem.

Actual behavior
The podman executable path is wrong so the systemd service fail to start.

Output

$ podman-compose version
podman-compose version 1.5.0
podman version 5.6.1

$ podman-compose systemd -a create-unit

while in your project type `podman-compose systemd -a register`

$ podman-compose systemd -a register

you can use systemd commands like enable, start, stop, status, cat all without `sudo` like this:

    systemctl --user enable --now 'podman-compose@drone-runner'
    systemctl --user status 'podman-compose@drone-runner'
    journalctl --user -xeu 'podman-compose@drone-runner'

and for that to work outside a session
you might need to run the following command *once*

    sudo loginctl enable-linger 'root'

you can use podman commands like:

    podman pod ps
    podman pod stats 'pod_drone-runner'
    podman pod logs --tail=10 -f 'pod_drone-runner'

Environment:

$ cat /etc/os-release
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.4 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy

Additional context

Add any other context about the problem here.