Disable js/ts features for the private scheme

This scheme is used internally by VS Code for features such as search/replace preview

extensions/typescript-language-features/src/utils/fileSchemes.ts

@@ -6,6 +6,8 @@
 export const file = 'file';
 export const untitled = 'untitled';
 export const git = 'git';
+export const privateScheme = 'private';
+
 /** Live share scheme */
 export const vsls = 'vsls';
 export const walkThroughSnippet = 'walkThroughSnippet';
@@ -20,5 +22,6 @@ export const semanticSupportedSchemes = [
  */
 export const disabledSchemes = new Set([
 	git,
-	vsls
+	vsls,
+	privateScheme,
 ]);