Cross-link 9.0 sample code

[guardrex]

Fixes #33869

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aspnetcore/blazor/components/cascading-values-and-parameters.md	aspnetcore/blazor/components/cascading-values-and-parameters
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aspnetcore/blazor/fundamentals/configuration.md	aspnetcore/blazor/fundamentals/configuration
aspnetcore/blazor/fundamentals/handle-errors.md	aspnetcore/blazor/fundamentals/handle-errors
aspnetcore/blazor/fundamentals/index.md	aspnetcore/blazor/fundamentals/index
aspnetcore/blazor/fundamentals/logging.md	aspnetcore/blazor/fundamentals/logging
aspnetcore/blazor/fundamentals/routing.md	aspnetcore/blazor/fundamentals/routing
aspnetcore/blazor/host-and-deploy/server.md	aspnetcore/blazor/host-and-deploy/server
aspnetcore/blazor/images-and-documents.md	aspnetcore/blazor/images-and-documents
aspnetcore/blazor/javascript-interoperability/call-dotnet-from-javascript.md	aspnetcore/blazor/javascript-interoperability/call-dotnet-from-javascript
aspnetcore/blazor/javascript-interoperability/call-javascript-from-dotnet.md	aspnetcore/blazor/javascript-interoperability/call-javascript-from-dotnet
aspnetcore/blazor/security/blazor-web-app-with-entra.md	aspnetcore/blazor/security/blazor-web-app-with-entra
aspnetcore/blazor/security/index.md	aspnetcore/blazor/security/index
aspnetcore/blazor/tutorials/build-a-blazor-app.md	aspnetcore/blazor/tutorials/build-a-blazor-app