[DB-1704] Upgrade from NET8 to NET10-rc.2

[timothycoleman]

• To be upgraded to NET10 RTM once it is out, and before our next production release: KurrentDB 26.0.0.
• In line with net10 base container images: Jammy is upgraded to Noble and Debian (bookworm) build is no longer present.
• Using dotnet test in VSTest mode. Upgraded to MTP1 but not MTP2 because support for this is removed there.
• MTP2 can follow later, but involves significant rejigging of the unit test projects.

[cloudflare-workers-and-pages]

Deploying eventstore with    Cloudflare Pages

Latest commit:	e19301a
Status:	✅  Deploy successful!
Preview URL:	https://54cbabdc.eventstore.pages.dev
Branch Preview URL:	https://timothycoleman-net10.eventstore.pages.dev

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[linear]

DB-1704 Spike

[Copilot]

Pull Request Overview

This PR upgrades KurrentDB from .NET 8 to .NET 10 RC 2, updating all project files, dependencies, and container images accordingly. The upgrade includes removing obsolete polyfills, updating to the latest package versions, and adapting code for API changes in .NET 10. The PR also removes legacy build scripts and updates Docker configurations to use Noble instead of Jammy/Bookworm base images.

Key Changes

• Updated all .csproj files to target net10.0 framework and removed obsolete LangVersion properties
• Removed polyfill code for Blazor routing attributes that are now available in .NET 10
• Updated NuGet package versions to .NET 10 RC 2 releases and removed packages that are now part of the framework

Reviewed Changes

Copilot reviewed 100 out of 100 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/Directory.Build.props	Updated global target framework to net10.0 and LangVersion to 14.0
src/Directory.Packages.props	Updated Microsoft package versions to 10.0.0-rc.2 and removed packages now in framework
Multiple .csproj files	Removed net8.0 target framework (inherited from Directory.Build.props) and obsolete properties
src/KurrentDB/Polyfills/*	Removed Blazor routing polyfill files now available in .NET 10
src/KurrentDB.Surge/Readers/SystemReader.cs	Updated LINQ async extension method calls for .NET 10 API changes
Dockerfile	Updated base images from jammy/bookworm to noble (Ubuntu 24.04)
README.md	Updated documentation to reference .NET 10 SDK

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[Copilot]

The comment prefix 'qq' is unclear. Consider using a standard TODO/HACK comment format with a clear description of when this workaround should be removed, such as '// TODO: Remove this workaround once .NET 10 RTM is released and runtime bug #120270 is fixed'.

Suggested change

	//qq temporarily workaround entrypointnotfound runtime bug that results from call to cast
	// https://github.com/dotnet/runtime/issues/120270
	// TODO: Remove this workaround once .NET runtime bug #120270 is fixed and available in a stable release.
	// Workaround for EntryPointNotFoundException caused by Enum.GetValues<Conf.GrpcMethod>().Cast<int>().
	// See: https://github.com/dotnet/runtime/issues/120270

[Copilot]

The Input property is now nullable but is dereferenced without null checks. The initialization in OnInitialized() only assigns if null, but the property should be marked nullable (LoginInputModel?) or initialized inline to match the previous behavior of = new().

Suggested change

	[SupplyParameterFromForm] LoginInputModel Input { get; set; }
	[SupplyParameterFromQuery] string ReturnUrl { get; set; }
	[CascadingParameter] HttpContext HttpContext { get; set; } = default!;
	protected override void OnInitialized() {
	Input ??= new();
	[SupplyParameterFromForm] LoginInputModel Input { get; set; } = new();
	[SupplyParameterFromQuery] string ReturnUrl { get; set; }
	[CascadingParameter] HttpContext HttpContext { get; set; } = default!;
	protected override void OnInitialized() {

[RagingKore]

LGTM