fix: downgrade storybook and set to fixed minor version 8.4 (#3640)

* fix: downgrade storybook and set to fixed minor version 8.4

Temporarily downgrade storybook to the previously working 8.4.7,
to fix issues occuring in 8.5 and 8.6 that cause all docs
descriptions to be missing.

* fix: remove deprecated storybook StoryStoreV7 option

Remove old option flagged during Storybook upgrade:
"StoryStoreV7 feature must be removed from your Storybook
configuration. This feature was removed in Storybook 8.0.0."

Author: jawinn

.storybook/main.js

@@ -143,8 +143,6 @@ export default {
 		check: false,
 	},
 	features: {
-		/* Code splitting flag; load stories on-demand */
-		storyStoreV7: true,
 		/* Builds stories.json to help with on-demand loading */
 		buildStoriesJson: true,
 	},

.storybook/package.json

@@ -48,21 +48,21 @@
 		"@babel/core": "^7.26.0",
 		"@chromatic-com/storybook": "^3.2.3",
 		"@etchteam/storybook-addon-status": "^5.0.0",
-		"@storybook/addon-a11y": "^8.4.7",
-		"@storybook/addon-actions": "^8.4.7",
+		"@storybook/addon-a11y": "~8.4.7",
+		"@storybook/addon-actions": "~8.4.7",
 		"@storybook/addon-designs": "^8.0.4",
-		"@storybook/addon-docs": "^8.4.7",
-		"@storybook/addon-essentials": "^8.4.7",
-		"@storybook/addon-interactions": "^8.4.7",
-		"@storybook/blocks": "^8.4.7",
-		"@storybook/builder-vite": "^8.4.7",
-		"@storybook/components": "^8.4.7",
-		"@storybook/core-events": "^8.4.7",
-		"@storybook/manager-api": "^8.4.7",
-		"@storybook/preview-api": "^8.4.7",
+		"@storybook/addon-docs": "~8.4.7",
+		"@storybook/addon-essentials": "~8.4.7",
+		"@storybook/addon-interactions": "~8.4.7",
+		"@storybook/blocks": "~8.4.7",
+		"@storybook/builder-vite": "~8.4.7",
+		"@storybook/components": "~8.4.7",
+		"@storybook/core-events": "~8.4.7",
+		"@storybook/manager-api": "~8.4.7",
+		"@storybook/preview-api": "~8.4.7",
 		"@storybook/test-runner": "^0.21.0",
-		"@storybook/theming": "^8.4.7",
-		"@storybook/web-components-vite": "^8.4.7",
+		"@storybook/theming": "~8.4.7",
+		"@storybook/web-components-vite": "~8.4.7",
 		"@whitespace/storybook-addon-html": "^6.1.1",
 		"chromatic": "^11.22.2",
 		"lit": "^3.2.1",
@@ -75,7 +75,7 @@
 		"react-syntax-highlighter": "^15.6.1",
 		"remark-gfm": "^4.0.0",
 		"rollup-plugin-postcss-lit": "^2.1.0",
-		"storybook": "^8.4.7",
+		"storybook": "~8.4.7",
 		"vite": "^5.4.11"
 	},
 	"keywords": [