debug: preserve focus in editor when integrated terminal is shown so …

…match debug console behavior and to make sense for accessibility

fyi @weinand

src/vs/workbench/api/node/extHostDebugService.ts

@@ -104,7 +104,7 @@ export class ExtHostDebugService extends ExtHostDebugServiceBase {
  cwdForPrepareCommand = args.cwd;
  }
 
- terminal.show();
+ terminal.show(true);
 
  const shellProcessId = await terminal.processId;