Fix S8970 FP: Inline code in razor page

[akurone]

Description

hi,
there is lot going on in razor -> c# which mostly includes flipping nullable context. but S8970 conflicts with CS8625 in razor files. (Vs 2026 18.8.1, .net SDK: 10.0.302)

Reproducer

this violates S8970:

[Parameter, EditorRequired] public object X { get; set; } = null!;

however this violates CS8625:

[Parameter, EditorRequired] public object X { get; set; } = null;

Product and Version

10.30.0.144632

[Floopy-Doo]

We have the almost same issue. IDE agnostic, same SDK.

S8970 contradicts with CS8602

// razor.cs
private SomeRecord? someData;

// razor
<span>@(this.someData!.SomeProperty)</span>

S8970 contradicts with CS8604

// razor.cs
private SomeRecord? someData
private string GetXYZ(SomeRecord input) {...}

// razor
<span>@(this.GetXYZ(this.someData!))</span>

S8970 contradicts with CS8620

// razor.cs
private SomeRecord? someData
private string InvokeAsync<TType>(TType? input) {...}

// razor
<button @onClick="(() => this.InvokeAsync(("abc", this.someData)!))">Test</button>

[jvandertil]

Note that you can't suppress these warnings either, because of #8050. You can add the #pragma but they aren't picked up by the analyzer.