Threats for SSR article

[guardrex]

Fixes #31043
Addresses #28161

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Internal previews

📄 File	🔗 Preview link
aspnetcore/blazor/components/prerender.md	Prerender ASP.NET Core Razor components
aspnetcore/blazor/components/prerendering-and-integration.md	Prerender and integrate ASP.NET Core Razor components
aspnetcore/blazor/fundamentals/signalr.md	ASP.NET Core Blazor SignalR guidance
aspnetcore/blazor/host-and-deploy/server.md	Host and deploy server-side Blazor apps
aspnetcore/blazor/hybrid/security/security-considerations.md	aspnetcore/blazor/hybrid/security/security-considerations
aspnetcore/blazor/javascript-interoperability/call-dotnet-from-javascript.md	Call .NET methods from JavaScript functions in ASP.NET Core Blazor
aspnetcore/blazor/javascript-interoperability/call-javascript-from-dotnet.md	Call JavaScript functions from .NET methods in ASP.NET Core Blazor
aspnetcore/blazor/security/server/interactive-server-side-rendering.md	aspnetcore/blazor/security/server/interactive-server-side-rendering
aspnetcore/blazor/security/server/static-server-side-rendering.md	aspnetcore/blazor/security/server/static-server-side-rendering
aspnetcore/blazor/tutorials/signalr-blazor.md	Use ASP.NET Core SignalR with Blazor