* wip -- add modal component using ember-wormhole, add static content but still need to enable onClose
* add onClose to modal
* WIP
* add copy and close button
* add copy and close button
* and copy and close button to modal
* use modal on each key action page
* make text copied text more generic
* update datakey textareas to codemirror
* only show user input on encrypt and decrypt
* only show user input on all key actions
* separate copy ciphertext, plaintext, and close button on datakey modal
* style ciphertext and plaintext as code
* only show separate copy buttons on datakey modal if both outputs are shown
* update modal styling
* style modal
* add descriptions to each key action
* remove conditional from hmac modal since we only ever show hmac output
* add modal for export key action
* make output scroll horizontally with copy button next to it
* make output scroll horizontally with copy button next to it
* escape & in copy and close button, format text output so it scrolls horizontally
* fix formatting of key action descriptions
* Ui/add transit modal tests (#8523)
* Fix tests for updated transit with modals workflow
* WIP // remove box shadow from key actions descriptions
* WIP // flash messages on successful action match mocks
* WIP // remove ciphertext view after datakey created
* WIP // make flash messages when copy & closing less generic, and match copy flash message
* WIP // Optionally show close button on modal, with tests
* remove unused deps from modal test
* WIP // Fix verify modal styling and content
* Add modal for sign action
* Fix output of non-wrapped export key
* Fix output of non-wrapped export key
* Add description to JSDOCS about modal component
* Add help text about plaintext encoded in base64
* add flash msgs for datakey and export
* flash success msg when closing modal on export page
* clarify sign success msg
* address PR feedback
* add indentation for export key json
* Fix modal tests pt 2
* Remove decode after decrypt in transit tests
Co-authored-by: Chelsea Shaw <chelshaw.dev@gmail.com>