Can't mount volumes with 9p securityModel: mapped-xattr

### Description

Hi. I've just updated my MacOS to Sonoma and updated and upgraded brew. I had a vm created using file /Users//.lima/_config/override.yaml:
```
mountType: 9p
mounts:
- location: "/Users/"
writable: true
9p:
securityModel: mapped-xattr
cache: mmap
- location: "~"
writable: true
9p:
securityModel: mapped-xattr
cache: mmap
- location: /tmp/colima
writable: true
9p:
securityModel: mapped-xattr
cache: mmap
```

like `colima start --mount-type 9p`

After update I can't run containers, they complain that `chown` operation not permitted.
Deleting the vm and creating from scratch doesn't help.
I figured out that now `colima start --mount-type 9p` ignores override.yaml for some reason. So I tried to edit options with vim using `colima start --edit`. I set the mountType: 9p and mounts. It doesn't accept both "/Users/" and "~" locations, so only "/Users/" remains. Any way it ignores options for 9p. When I restart vm again with `colima start --edit` I see only:

```
mountType: 9p
mounts:
- location: "/Users/"
writable: true
- location: /tmp/colima
writable: true
```

So I unable to set securityModel: mapped-xattr and run containers properly.

How is it supposed to set up colima now in order to allow containers that run process not as root to work with mounted volumes?

Thank you in advance.

### Version

colima version 0.6.7
git commit: ba1be00e9aec47f2c1ffdacfb7e428e465f0b58a

runtime: docker
arch: x86_64
client: v24.0.7
server: v24.0.7
limactl version 0.19.1
qemu-img version 8.2.0
Copyright (c) 2003-2023 Fabrice Bellard and the QEMU Project developers

### Operating System

- [ ] macOS Intel <= 13 (Ventura)
- [X] macOS Intel >= 14 (Sonoma)
- [ ] Apple Silicon <= 13 (Ventura)
- [ ] Apple Silicon >= 14 (Sonoma)
- [ ] Linux

### Output of `colima status`

INFO[0000] colima is running using QEMU
INFO[0000] arch: x86_64
INFO[0000] runtime: docker
INFO[0000] mountType: 9p
INFO[0000] socket: unix:///Users/21370766/.colima/default/docker.sock

### Reproduction Steps

1. Create a colima vm using `colima start --edit`.
2. Edit and save with vim:
```
mountType: 9p
mounts:
- location: "/Users/21370766"
writable: true
9p:
securityModel: mapped-xattr
cache: mmap
- location: /tmp/colima
writable: true
9p:
securityModel: mapped-xattr
cache: mmap
```
4. Run rabbitmq container with mounted volumes

```
rabbitmq:
image: library/rabbitmq:3.12.10-management-alpine
ports:
- "5672:5672"
- "8080:15672"
volumes:
- ./.hidden/rabbitmq/data/:/var/lib/rabbitmq/:rw
- ./.hidden/rabbitmq/log/:/var/log/rabbitmq:rw
```

6. rabbitmq terminates with error:
```
rabbitmq-1 | chown: /var/lib/rabbitmq: Operation not permitted
rabbitmq-1 exited with code 1
```

### Expected behaviour

Processes in docker containers can make chown and chmod and use mounted volumes.

### Additional context

_No response_