VZFileHandleNetworkDeviceAttachment should support AF_UNIX type DGRAM sockets

[balajiv113]

Describe the bug
The fileHandle must be a datagram socket error thrown for AF_UNIX type Datagram socket.

Virtualization framework provides support for Datagram socket of type AF_UNIX as well

To Reproduce
Steps to reproduce the behavior:

vz.NewFileHandleNetworkDeviceAttachment(f) // f has a file descriptor which is a datagram socket of type AF_UNIX

Refer https://github.com/balajiv113/lima/blob/driver/pkg/vz/vz_driver.go#L132 for creating AF_UNIX based DATAGRAM socket

Expected behavior
No error thrown.

Environment that you use to compile (please complete the following information):

• Xcode version: [Xcode 14.1, Build version 14B47b]
• macOS Version: [ProductName: macOS ProductVersion: 13.0 BuildVersion: 22A380 ]
• mac architecture: [x86_64 ]
• Go Version: [go version go1.19.2 darwin/amd64 ]

Additional context
This issue occurs due to the recently added validation of isInet check here

vz/network.go

Line 176 in c4f6e4b

case *syscall.SockaddrInet4, *syscall.SockaddrInet6:

[Code-Hex]

@balajiv113 Thanks for creating this issue!
Nice catch 👍