No meaningful error even in debug mode when Docker Desktop (WSL2) is not running

#### Overview of the Issue

I'm running Docker Desktop on Windows and execution of `docker` command in the WSL2 results in an error until Docker Desktop is started (assuming auto start is disabled):
```
The command 'docker' could not be found in this WSL 2 distro.
We recommend to activate the WSL integration in Docker Desktop settings.

For details about using Docker Desktop with WSL 2, visit:

https://docs.docker.com/go/wsl2/
```

Until Docker Desktop is started, packer fails in a bit unexpected way:
```
$ packer build -debug .
Debug mode enabled. Builds will not be parallelized.
docker.openjdk: output will be in this color.

Build 'docker.openjdk' errored after 62 milliseconds 741 microseconds: exit status 1

==> Wait completed after 62 milliseconds 798 microseconds

==> Some builds didn't complete successfully and had errors:
--> docker.openjdk: exit status 1

==> Builds finished but no artifacts were created.
```

#### Reproduction Steps

- Install WSL2 and Docker Desktop
- Make sure docker is not started
- Run `packer build` with a docker source

### Plugin and Packer version
```Packer v1.8.3```

### Simplified Packer Buildfile

```hcl
packer {
required_plugins {
docker = {
version = ">= 1.0.1"
source = "github.com/hashicorp/docker"
}
}
}

source "docker" "openjdk" {
image = "eclipse-temurin:18-jre-jammy"
commit = true
}

build {
sources = [
"source.docker.openjdk"
]
provisioner "shell" {
inline = ["mkdir /app"]
}
post-processor "docker-tag" {
repository = "test/test1"
tags = ["{{isotime `2006-01-02`}}"]
}
}
```

### Operating system and Environment details

Windows 11, WSL2, Docker Desktop