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

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

package.json

@@ -429,7 +429,6 @@
     "react-split-pane@0.1.92": "patch:react-split-pane@npm:0.1.92#.yarn/patches/react-split-pane-npm-0.1.92-93dbf51dff.patch",
     "history@4.10.1": "patch:history@npm%3A4.10.1#./.yarn/patches/history-npm-4.10.1-ee217563ae.patch",
     "redux": "^5.0.0",
-    "@storybook/blocks@npm:8.1.6": "patch:@storybook/blocks@npm%3A8.1.6#~/.yarn/patches/@storybook-blocks-npm-8.1.6-892f57a6d7.patch",
     "react-grid-layout": "patch:react-grid-layout@npm%3A1.4.4#~/.yarn/patches/react-grid-layout-npm-1.4.4-4024c5395b.patch",
     "@grafana/plugin-e2e/@grafana/e2e-selectors": "workspace:*",
     "@grafana/scenes/@grafana/e2e-selectors": "workspace:*",