tools: add @ts-ignore removal from stories to migrate-converged-pkg

[Hotell]

Follows #20478

Actual behavior:

• converged package stories contain @ts-ignore pragmas if they import other monorepo packages
  • type checking doesn't work

@filename packages/react-menu/example.stories.tsx

// https://github.com/microsoft/fluentui/pull/18695#issuecomment-868432982
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
import { Button } from '@fluentui/react-button';

Expected behavior:

After package has been migrated to solution TS config all @ts-ignore pragmas should be removed, thus enabling proper DX and CI type checks within stories

@filename packages/react-menu/example.stories.tsx

-// https://github.com/microsoft/fluentui/pull/18695#issuecomment-868432982
-// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-// @ts-ignore
import { Button } from '@fluentui/react-button';

[Hotell]

Closed by #20575