Feat/add all subject icons

[JBR90]

How to review this PR

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• Check component hierarchy is followed correctly
• Check the design Heuristics have been followed
• Check naming conventions have been applied
• Check for these gotchyas:
  • Missing exports for Oak components
  • Accidental export of Internal components
  • Snapshots of unexpected components have been modified
  • Circular dependencies
  • Code duplication (via not using base components)
  • Non-functional storybook for this or related components
  • Sensitve files changed eg. atoms, or style tokens
  • Relative imports
  • Default exports

Add your PR description below

-Removes some unwanted media query styling
-Adds lesson and unit search icons
-Adds keyIconColor prop

Link to the design doc

https://www.figma.com/file/hPCjH192PlemuDKRzz3JxM/Search?node-id=819%3A98630&mode=dev

A link to the component in the deployment preview

https://deploy-preview-153--lively-meringue-8ebd43.netlify.app/?path=/docs/components-organisms-teacher-oaksearchfiltercheckbox--docs

Testing instructions

Check icon color is the same on click when keepIconColor is true
Check that background color change on click when viewing as mobile

ACs

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