Scenario Outline codegen emits unqualified `System.Linq` → CS0234 when a namespace segment is named "System"

[mellis-ao]

Reqnroll Version

3.3.4

Which test runner are you using?

TUnit

Test Runner Version Number

3.3.4

.NET Implementation

.NET 10.0

Test Execution Method

Visual Studio Test Explorer

Content of reqnroll.json configuration file

Do not have one

Issue Description

The code generated for a Scenario Outline references System.Linq.Enumerable
without a global:: qualifier, while the rest of the generated file is
global::-qualified. If any segment of the generated namespace is named System
(e.g. a feature under /System/...), the unqualified reference binds to the
project's own ...System namespace instead of the BCL System, and the build fails:

CS0234: The type or namespace name 'Linq' does not exist in the namespace
'MyProject.Tests.System' (are you missing an assembly reference?)

In <FeatureName>.feature.cs for a Scenario Outline:

@__tags = System.Linq.Enumerable.ToArray(System.Linq.Enumerable.Concat(@__tags, exampleTags));

Everything else in the same file is already fully qualified, e.g.
global::System.CodeDom.Compiler.GeneratedCodeAttribute, so this is the sole
un-qualified System.* reference.

Please Note - Your template is outdated and has no options to select TUnit as the runner and .Net 10 as the implementation.

Steps to Reproduce

1. Create a Reqnroll test project (RootNamespace e.g. MyProject).
2. Add a feature file under a folder path containing a System segment, e.g.
   Tests/System/Features/Foo.feature, so the generated namespace is
   MyProject.Tests.System.Features.
3. Give the feature a Scenario Outline with an Examples table.
4. Build.