.linkconfig should be able to set notify

**Describe the bug**
Link does not set `⎕se.Link.NOTIFY` to 1 even though .linkconfig specifies it.

**To Reproduce**
I copy the example text from the docs at https://dyalog.github.io/link/4.0/Usage/ConfigFiles/ to make a .linkconfig file in my Documents folder
in C:/users/dyavc/Documents
```
$ cat .linkconfig
{
LinkVersion: { ID: "4.0.11"},
Debug: {
notify: 1,
},
Settings: {
watch: "ns",
},
}
```

**Expected behaviour**
Expect ⎕se.Link.NOTIFY to be set all the time when I link.

**Session transcript**
```
]link.create # d:/temp/linktest2
Linked: # → d:\temp\linktest2
]link.Status
Namespace Source Files
# → d:/temp/linktest2 22

]link.configure *
Contents of "C:\Users\dyavc\Documents\.linkconfig":
Debug : notify:1
Settings : watch:ns

⎕se.Link.NOTIFY
0
```
**Desktop (please complete the following information):**
```
]tools.version
Dyalog 19.0.49395 64-bit Unicode, BuildID 7fe061c5
OS Windows 10 or Windows Server 2016 (10.0.19045) 64-bit
Link 4.0.17
SALT 2.915
UCMD 2.6
.NET .NET Framework 4.8.9256.0
WS 19.0
Tatin 0.104.1
Cider 0.39.0
```
**Additional context**
This is from a customer, aplteam