Context: Visual Studio 2022 v17.9.6, .NET 8 (SDK v8.0.204), Blazor Webassembly Hosted solution.
Applying Hot Reload to a non-debugging (CTRL-F5 run) webassembly app ... stopped working. At one time in the past it was working (more so with .NET 7), in a rather flakey way, as one would expect considering the limitations of certain types of edits not being supported. But I'm talking about very simple edits, like changing <p>Hi</p> to <p>Bye</p> in a Razor component.
In my case, it got to the point where every attempt to apply edits via hot reload would result in VS encountering an "Unexpected error" (a ManagedDeltaApplierFailedToConnectException, to be precise) and post the following dialog box:
In other words, Hot Reload is completely broken. What is the fix?