Add manga fetch timestamp to thumbnail url (#598)

In case the fetch timestamp of a manga changed, it's possible that the thumbnail has changed as well, thus, the currently cached image should be ignored

src/components/manga/MangaDetails.tsx

@@ -19,6 +19,7 @@ import { requestManager } from '@/lib/requests/RequestManager.ts';
 import { makeToast } from '@/components/util/Toast';
 import { useMetadataServerSettings } from '@/util/metadataServerSettings.ts';
 import { CategorySelect } from '@/components/navbar/action/CategorySelect.tsx';
+import { Mangas } from '@/lib/data/Mangas.ts';
 
 const DetailsWrapper = styled('div')(({ theme }) => ({
     width: '100%',
@@ -215,9 +216,7 @@ export const MangaDetails: React.FC<IProps> = ({ manga }) => {
                 <TopContentWrapper>
                     <ThumbnailMetadataWrapper>
                         <Thumbnail>
-                            {manga.thumbnailUrl && (
-                                <img src={requestManager.getValidImgUrlFor(manga.thumbnailUrl)} alt="Manga Thumbnail" />
-                            )}
+                            {manga.thumbnailUrl && <img src={Mangas.getThumbnailUrl(manga)} alt="Manga Thumbnail" />}
                         </Thumbnail>
                         <Metadata>
                             <h1>{manga.title}</h1>