Split enum value sorting from field sorting

[michaelstaib]

Fixes #9708

[Copilot]

Pull request overview

Fixes regression where SortFieldsByName = true also sorted enum values in v16. Introduces a separate SortEnumValuesByName option (default false), restoring v15 behavior while still allowing opt-in enum sorting.

Changes:

• Adds SortEnumValuesByName to IReadOnlySchemaOptions / SchemaOptions and a corresponding OrderEnumValuesByName to SchemaFormatterOptions.
• Updates EnumType initialization and SchemaFormatter to sort enum values based on the new option (decoupled from field sorting).
• Adds tests and an introspection snapshot covering the new behavior.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/HotChocolate/Core/src/Types/IReadOnlySchemaOptions.cs	Adds SortEnumValuesByName to the read-only options interface.
src/HotChocolate/Core/src/Types/SchemaOptions.cs	Adds the mutable property and propagates it in FromOptions.
src/HotChocolate/Core/src/Types/StoreGlobalSchemaOptionsTypeInterceptor.cs	Forwards the new option into SchemaFormatterOptions.
src/HotChocolate/Core/src/Types/Types/EnumType.Initialization.cs	Sorts enum values during type completion only when the new option is true.
src/HotChocolate/Core/src/Types.Abstractions/Serialization/SchemaFormatterOptions.cs	Adds OrderEnumValuesByName and updates OrderFieldsByName doc.
src/HotChocolate/Core/src/Types.Abstractions/Serialization/SchemaFormatter.cs	Uses the new option when ordering enum values during formatting.
src/HotChocolate/Core/test/Types.Tests/Types/EnumTypeTests.cs	Adds tests for the new option (incl. introspection).
src/HotChocolate/Core/test/Types.Tests/Types/snapshots/EnumTypeTests.SortEnumValuesByName_Should_SortIntrospectionResult.md	Snapshot for sorted introspection result.

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