.NET 8 support

[murtzprecise]

It would be great to enable support for .NET 8.

[MackinnonBuck]

This is certainly worth considering, but there currently are a number of .NET 9 features that this project currently relies on. I can think of two off the top of my head:

• The new ComponentBase.RendererInfo/ComponentBase.AssignedRenderMode properties
• The new enhancednavigationstart/enhancednavigationend events

I'd have to find alternatives to these to enable .NET 8 support. It might be possible, albeit nontrivial.