vscode-dotty: Avoid conflict with Visual Studio Live Share

See explanation in dragos/dragos-vscode-scala#82

Author: smarter

vscode-dotty/src/extension.ts

@@ -88,7 +88,10 @@ function fetchAndRun(artifact: string) {
 
 function run(serverOptions: ServerOptions) {
   const clientOptions: LanguageClientOptions = {
-    documentSelector: ['scala'],
+    documentSelector: [
+      { language: 'scala', scheme: 'file' },
+      { language: 'scala', scheme: 'untitled' }
+    ],
     synchronize: {
       configurationSection: 'dotty'
     }