Chore: Bump Storybook to 8.4.x (#96128)

* feat(storybook): upgrade to version 8.4

* chore(grafana-ui): replace all usage of preview with canvas

* chore(grafana-ui): add fs-extra as dev dependency

* feat(storybook): copy required assets to temp static directory due to 8.4 not supporting file paths

* chore(yarn): fix up lock file so swc-loader doesnt break for decoupled plugins

* Add ExampleFrame component to render grafana-ui examples

* Prevent Storybook from styling in ExampleFrame

* Use global styles in Storybook docs

* Update mdx docs to use ExampleFrame or correct Canvas usage

* update AutoSizeInput

* Update Index mdx

* remove the gfm mdx package

* silence sass warnings

* fix(storybook): add missing imports to fix failed rendering of stories/docs

* remove empty docs

---------

Co-authored-by: joshhunt <josh@trtr.co>

.gitignore

@@ -141,6 +141,7 @@ pkg/services/quota/quotaimpl/storage/storage.json
 
 # Ignoring frontend packages specifics
 /packages/grafana-ui/.yarn/.cache
+/packages/grafana-ui/.storybook/static
 /packages/**/dist
 /packages/**/compiled
 /packages/**/.rpt2_cache
@@ -225,4 +226,4 @@ public/app/plugins/**/dist/
 # Mock service worker used for fake API responses in frontend development
 public/mockServiceWorker.js
 
-/e2e/test-plugins/*/dist
+/e2e/test-plugins/*/dist