This reverts commit f09ab88891, reversing
changes made to effc761e0e.
This is being temporarily reverted to make it easier to release an
urgent fix for v10.15.1.
* Improve type checking and handle incorrect category in transaction-icon component
* Capture exception for sentry when transaction icon is passed an unrequired category
* Rename ui/components/app/transaction-icon/index.scss -> ui/components/app/transaction-icon/transaction-icon.scss
* Improve type checking and handle incorrect category in transaction-icon component
* Capture exception for sentry when transaction icon is passed an unrequired category
* Rename ui/components/app/transaction-icon/index.scss -> ui/components/app/transaction-icon/transaction-icon.scss