enhance(frontend): データセーバー有効時はGIFアバターを停止 (#12165)

* (enhance) データセーバーモード有効時はGIFアバターを停止

* Update Changelog

* Update CHANGELOG.md

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Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

packages/frontend/src/components/global/MkAvatar.vue

@@ -83,7 +83,7 @@ const bound = $computed(() => props.link
 	? { to: userPage(props.user), target: props.target }
 	: {});
 
-const url = $computed(() => defaultStore.state.disableShowingAnimatedImages
+const url = $computed(() => (defaultStore.state.disableShowingAnimatedImages || defaultStore.state.enableDataSaverMode)
 	? getStaticImageUrl(props.user.avatarUrl)
 	: props.user.avatarUrl);