enhance(frontend): データセーバーモードで隠れる画像を増やす等 (#11779)

* enhance datasaver mode

* サムネイルがないとき変な角丸にならんようにする

* Avoid using wildcard selector

* Avoid wildcard

* Update MkMediaImage.vue

---------

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

packages/frontend/src/pages/page.vue

@@ -16,7 +16,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 				</div>
 				-->
 					<div class="banner">
-						<img v-if="page.eyeCatchingImageId" :src="page.eyeCatchingImage.url"/>
+						<MkMediaImage
+							v-if="page.eyeCatchingImageId"
+							:image="page.eyeCatchingImage"
+							:cover="true"
+							:disableImageLink="true"
+							class="thumbnail"
+						/>
 					</div>
 					<div class="content">
 						<XPage :page="page"/>
@@ -74,6 +80,7 @@ import XPage from '@/components/page/page.vue';
 import MkButton from '@/components/MkButton.vue';
 import * as os from '@/os';
 import { url } from '@/config';
+import MkMediaImage from '@/components/MkMediaImage.vue';
 import MkFollowButton from '@/components/MkFollowButton.vue';
 import MkContainer from '@/components/MkContainer.vue';
 import MkPagination from '@/components/MkPagination.vue';
@@ -204,11 +211,14 @@ definePageMetadata(computed(() => page ? {
 		}
 
 		> .banner {
-			> img {
+			> .thumbnail {
 				// TODO: 良い感じのアスペクト比で表示
 				display: block;
 				width: 100%;
-				height: 150px;
+				height: auto;
+				aspect-ratio: 3/1;
+				border-radius: var(--radius);
+				overflow: hidden;
 				object-fit: cover;
 			}
 		}