CS8625 code fix fails when declaration to fix is in another file

[jroessel]

Version Used: .NET 8.0.302

Steps to Reproduce:

1. Have code where code in one file sets a field/property in another file to null , e.g.

Parent.cs

public class Parent
{
    public void M(Child c)
    {
        c.next = null;
        c.Next = null;
    }
}

Child.cs

public sealed class Child
{
    internal Child next;
    public Child Next { get => next; set => next = value; }
}

2. Place the cursor on either of the null literals where CS8625 is raised.
3. Apply the suggested "Declare as nullable" code fix

Diagnostic Id: CS8625: Cannot convert null literal to non-nullable reference type.

Expected Behavior:

The code fix should append a ? to the field/property type in the other file.

Actual Behavior:

System.ArgumentException : The node is not part of the tree.
Parameter name: node
   at Microsoft.CodeAnalysis.Editing.SyntaxEditor.CheckNodeInOriginalTree(SyntaxNode node)
   at Microsoft.CodeAnalysis.Editing.SyntaxEditor.ReplaceNode(SyntaxNode node,SyntaxNode newNode)
   at async Microsoft.CodeAnalysis.CSharp.CodeFixes.DeclareAsNullable.CSharpDeclareAsNullableCodeFixProvider.FixAllAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.CodeFixes.SyntaxEditorBasedCodeFixProvider.FixAllWithEditorAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.CodeActions.CodeAction.GetChangedSolutionAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.CodeActions.CodeAction.ComputeOperationsAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.CodeActions.CodeAction.ComputePreviewOperationsAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.CodeActions.CodeAction.GetPreviewOperationsAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.Editor.Implementation.Suggestions.SuggestedAction.GetPreviewResultAsync(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.Editor.Implementation.Suggestions.SuggestedActionWithNestedFlavors.<>c__DisplayClass16_0.<GetPreviewAsync>b__0(<Unknown Parameters>)
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at async Microsoft.CodeAnalysis.Extensions.IExtensionManagerExtensions.PerformFunctionAsync[T](<Unknown Parameters>)

Reproducible in both VS Code and Visual Studio 2022.