[Blazor] NavigationLock LocationChangingContext CancellationToken cancelled every time navigation location changes

### Describe the bug

I am attempting to react to navigation being canceled. I have a NavigationLock component in my razor and am handling its OnBeforeInternalNavigation event. That event has 1 parameter of type LocationChangingContext which has a CancellationToken property. When I register a delegate to be called when that CancellationToken is cancelled, I find that it fires the delegate every time the location is changed - regardless of whether it was actually cancelled or not.

### Expected Behavior

LocationChangingContext's CancellationToken only calls registered delegates when the navigation is cancelled, not on successful navigation.

### Steps To Reproduce

https://github.com/pantoast/NavigationLockCancellationTokenDelegateDemo

### .NET Version

7.0.101

### Anything else?

Microsoft Visual Studio Enterprise 2022 (64-bit) Version 17.4.3