Added FileData type instead of a Stream to provide a Content Type of a file

[ePasha]

No description provided.

[Copilot]

Pull Request Overview

Introduces a new FileData record to carry both the file stream and its content type through the GraphQL upload path, and updates all relevant contexts, schema definitions, server handlers, and tests.

• Defined FileData and changed IInputExecutionContext.GetFile to return it.
• Updated coerceFileValue, FileType, and request context to use FileData.
• Adjusted tests and mock helpers to include and verify content type information.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/FSharp.Data.GraphQL.Tests/Helpers.fs	Added mockContentType constant and updated mock context to return FileData.
tests/FSharp.Data.GraphQL.Tests/FileTests.fs	Changed test inputs to FileData, added getFullInfo helper, and updated expected assertions.
src/FSharp.Data.GraphQL.Shared/SchemaDefinitions.fs	Updated coerceFileValue and FileType to operate on FileData instead of raw streams.
src/FSharp.Data.GraphQL.Shared/InputContext.fs	Introduced the FileData record and modified the IInputExecutionContext signature.
src/FSharp.Data.GraphQL.Server.AspNetCore/RequestExecutionContext.fs	Wrapped ASP.NET Core uploaded files in FileData with ContentType.

Comments suppressed due to low confidence (2)

src/FSharp.Data.GraphQL.Shared/InputContext.fs:3

• [nitpick] Add XML documentation for the FileData record to clarify the purpose of the Stream and ContentType fields for consumers.

type FileData = {

src/FSharp.Data.GraphQL.Shared/SchemaDefinitions.fs:486

• [nitpick] Update the FileType description to mention that content type information is now captured via the FileData record.

    let FileType : InputCustomDefinition<FileData> = {