I've upgraded the site to .NET 8 Blazor and it went great (so far) with only a minor issue I could easily fix.
Microsoft has (yet again) made a lot of changes to how Blazor applications can be constructed. If I want to follow the new ways of doing things, I'll probably have to rebuild a lot of the application. I'm not super excited about this, and we'll see if I ever get around to doing this... It will require a lot of work.