Binding the `§` key to actions does not work, only the equivalent Ctrl-Alt-5§§

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### Windows Terminal version

1.21.10351.0

### Windows build number

10.0.26100.3323

### Other Software

_No response_

### Steps to reproduce

1. Use a Swiss German keyboard, and the corresponding Swiss German keyboard layout
2. Just to check: Press the `§` key while focussing a text field, and see an `§` appear. Press Ctrl-Alt-5, and the same `§` should appear.
3. Bind the `quakeMode` action to `§` with the Terminal Settings window.

### Expected Behavior

Pressing the `§` opens a quake mode window.

### Actual Behavior

1. Pressing the `§` key does not open a quake mode window.
2. Pressing the (equivalent) Ctrl-Alt-5 does open a quake mode window.

A new section appears in `settings.json` with these contents:
```json
{
"command":
{
"action": "quakeMode"
},
"keys": "\u00a7"
},
```

Reproduce the binding in the Terminal Settings window using a Swiss German keyboard layout, then inspect the generated settings.json entry for the § key and trace how it is handled. Done means pressing § opens quake mode just as Ctrl-Alt-5 does, with coverage for this keyboard layout and binding behavior if the existing tests provide a suitable place.

Written by the indexing model from the issue text.