* 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