get it working in demo with overviewRulerwidth not considered"

src/common/services/OptionsService.ts

@@ -52,7 +52,8 @@ export const DEFAULT_OPTIONS: Readonly<ITerminalOptions> = {
   altClickMovesCursor: true,
   convertEol: false,
   termName: 'xterm',
-  cancelEvents: false
+  cancelEvents: false,
+  overviewRulerWidth: undefined
 };
 
 const FONT_WEIGHT_OPTIONS: Extract<FontWeight, string>[] = ['normal', 'bold', '100', '200', '300', '400', '500', '600', '700', '800', '900'];