fix "loading" being passed as html props to div error

[justincorrigible]

Description of changes

This selective props forwarding prevents the following error message, which comes up as a result of @emotion passing loading to the Container's div as an HTML attribute (which is a WIP for lazyloading of images whatwg/html#3752).

Type of Change

• Bug
• Styling
• New Feature

Checklist before requesting review:

• Design (select one):
  • Matches design:
    • component sizes, spacing, and styles
    • font size, weight, colour
    • spelling has been double checked
  • No design provided, screenshot of changes included in PR
  • No changes to UI
• UI Kit (select one):
  • New Components with storybook stories created
  • Modified Existing components and updates stories
  • No new UIKit components or changes
• Feature is minimally responsive
• Manual testing of UI feature
• Add copyrights to new files
• Connected ticket to PR