Extra \x20 in the service file

```
ExecStart=/usr/local/bin/k0s controller --config=/etc/k0s/k0s.yaml --data-dir=/var/lib/k0s --enable-k0s-cloud-provider=true --enable-worker=true --k0s-cloud-provider-update-frequency=30s --kube-controller-manager-extra-args=--v=0\x20--logging-format=json --kubelet-extra-args=--v=0\x20--node-ip=100.64.0.136\x20--hostname-override=xxxx--no-taints=true --token-file=/etc/k0s/k0stoken
```
```
- role: controller+worker
noTaints: true
privateAddress: 100.64.0.136
hostname: xxxx
ssh:
address: xxxx
user: root
installFlags:
- --kubelet-extra-args="--v=0"
- --kube-controller-manager-extra-args="--v=0 --logging-format=json"
- --enable-k0s-cloud-provider=true
- --k0s-cloud-provider-update-frequency 30s
```
Not sure why

No source file or test is named. Reproduce the generated service using the supplied installFlags and compare its ExecStart with the YAML configuration, then trace how the extra arguments are assembled. Done means the generated service preserves argument spacing without literal \x20 sequences.

Written by the indexing model from the issue text.