Custom Toolbar in PayloadCMS RTE

I would need some help regarding creating a custom toolbar for PayloadCMS RTE.

The current version is PayloadCMS 3.49.1, and linked with @payloadcms/richtext-lexical version of 0.28.0.

My goal is to create an ordered list using alphabetical and roman numerals.

I have tried to upgrade the version to 3.55.1, but without any result.

Can I use the current version of 3.49.1 to create the custom toolbars?

This is my current code

import {
  FixedToolbarFeature,
  HeadingFeature,
  InlineToolbarFeature,
  lexicalEditor,
  BlocksFeature,
  TextStateFeature,
  defaultColors,
} from '@payloadcms/richtext-lexical'

import { Banner } from '@/blocks/Banner/config'
import { Content } from '@/blocks/Content/config'

export const customFeature = (defaultFeatures: any) => {
  return [
    ...defaultFeatures.filter(
      (feature: any) => !['inlineCode', 'checklist', 'blockquote'].includes(feature.key),
    ),
    FixedToolbarFeature(),
    BlocksFeature({
      blocks: [Banner, Content],
    }),
    TextStateFeature(),
  ]
}