Remove inlayHints from diff view.

Similar to issues we had with semantic tokens in the diff view, documents from schemes other than file likely do not match the language server's view of the workspace.

Author: JoeRobich

src/features/inlayHintProvider.ts

@@ -30,6 +30,11 @@ export default class CSharpInlayHintProvider extends AbstractProvider implements
     }
 
     async provideInlayHints(document: vscode.TextDocument, range: vscode.Range, token: vscode.CancellationToken): Promise<vscode.InlayHint[]> {
+        // Exclude documents from other schemes, such as those in the diff view.
+        if (document.uri.scheme !== "file") {
+            return [];
+        }
+        
         if (isVirtualCSharpDocument(document)) {
             return [];
         }