Update storybook monorepo to v8.4.7 (#40841)

* Update storybook monorepo to v8.4.7

* Add missing dependency

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Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: tbradsha <32492176+tbradsha@users.noreply.github.com>

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/12603215679

Upstream-Ref: Automattic/jetpack@38f7c63

package.json

@@ -24,15 +24,15 @@
 	},
 	"type": "module",
 	"devDependencies": {
-		"@storybook/addon-actions": "8.3.5",
-		"@storybook/blocks": "8.3.5",
-		"@storybook/preview-api": "8.3.5",
-		"@storybook/react": "8.3.5",
+		"@storybook/addon-actions": "8.4.7",
+		"@storybook/blocks": "8.4.7",
+		"@storybook/preview-api": "8.4.7",
+		"@storybook/react": "8.4.7",
 		"@types/markdown-it": "14.1.2",
 		"@types/turndown": "5.0.5",
 		"jest": "^29.6.2",
 		"jest-environment-jsdom": "29.7.0",
-		"storybook": "8.3.5",
+		"storybook": "8.4.7",
 		"typescript": "5.0.4"
 	},
 	"exports": {