feat: Replace animated wallpaper by static one

[JF-Cozy]

since we have performance issue with firefox and older CPU.

La modification a été testé sur une machine lente, on observe bien une baisse de la consommation CPU

### ✨ Features

* Replace animated wallpaper by static one

[bundlemon]

BundleMon

Unchanged files (13)

Status	Path	Size	Limits
✅	vendors/home.(hash).js	1.5MB	1.6MB
✅	services/softDeleteOrRestoreAccounts/home.js	464.31KB	490KB
✅	services/updateAccounts/home.js	461.37KB	467KB
✅	services/deleteAccounts/home.js	309.73KB	500KB
✅	services/myselfFromIdenties/home.js	234.26KB	245KB
✅	services/polyfillFetch/home.js	97.38KB	99KB
✅	app/home.(hash).js	47.2KB	50KB
✅	vendors-home.(hash).(hash).min.css	38.77KB	40KB
✅	intents/home.(hash).js	25.51KB	35KB
✅	services/attributesHelpers/home.js	15.23KB	16KB
✅	app-home.(hash).min.css	1.78KB	15KB
✅	intents/index.html	650B	1KB
✅	intents-home.(hash).min.css	158B	6KB

Total files change -6B 0%

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history | Target branch size history

[cballevre]

LGTM 👍