Default to `animation: false` when prefers-reduced-motion is set (#9690)

* Default to `animation: false` when prefers-reduced-motion is set

* `.matches`

packages/frontend/src/store.ts

@@ -156,7 +156,7 @@ export const defaultStore = markRaw(new Storage('base', {
 	},
 	animation: {
 		where: 'device',
-		default: true,
+		default: !matchMedia('(prefers-reduced-motion)').matches,
 	},
 	animatedMfm: {
 		where: 'device',