Update `[SupplyParameterFromQuery]` guidance and examples

[MackinnonBuck]

Starting in .NET 8 Preview 6, the [SupplyParameterFromQuery] attribute no longer has to be used with the [Parameter] attribute. Furthermore, components other than page components can read query parameters using [SupplyParameterFromQuery].

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• ID: 35474d24-8039-f04a-de14-1530b8e8506c
• Version Independent ID: b6cb2574-6326-a40d-0b6c-d1661328e828
• Content: ASP.NET Core Blazor routing and navigation
• Content Source: aspnetcore/blazor/fundamentals/routing.md
• Product: aspnet-core
• Technology: aspnetcore-fundamentals
• GitHub Login: @guardrex
• Microsoft Alias: riande