message: fix(helpers): props added to window should be optional
diff: /** For self page messaging */
  declare global {
  interface Window {
  - pageId: number | string
  - faviconURL: string
  - pageTitle: string
  - pageURL: string
  + pageId?: number | string
  + faviconURL?: string
  + pageTitle?: string
  + pageURL?: string
  }
  }
  