Unzipped install, comment "disabledProfileSources", save, crash

### Windows Terminal version (or Windows build number)

Microsoft Windows 10 Pro for Workstations 10.0.19043.1165 (2009, 21H1) WindowsTerminal: 1.11.2421.0WindowsTerminal: 1.10.2383.0

### Other Software

_No response_

### Steps to reproduce

In either WT (1.10) or WTPreview (1.11), installed by just unzipping, open settings.json from the settings UI. Comment these lines (here, just the Azure line is sufficient):

//"disabledProfileSources":
//[
// "Windows.Terminal.Wsl",
// "Windows.Terminal.Azure",
// "Windows.Terminal.PowershellCore"
//],

Save the file.

### Expected Behavior

Nothing to speak of. This is how the properly (msix) installed ones behave.

### Actual Behavior

WindowsTerminal disappears.

Faulting application name: WindowsTerminal.exe, version: 1.11.2108.30001, time stamp: 0x612d15d9
Faulting module name: KERNELBASE.dll, version: 10.0.19041.1151, time stamp: 0x891df6d3
Exception code: 0xc000027b
Fault offset: 0x000000000010bd3e

Reproduce the crash in WindowsTerminal installed by unzipping, using the settings UI to open settings.json, comment disabledProfileSources, and save. Compare this with the expected behavior of the MSIX-installed version; done means saving the commented configuration no longer causes WindowsTerminal to disappear.

Written by the indexing model from the issue text.