perf(images): add memCacheHeight to direct CachedNetworkImage sites

lib/screens/livetv/program_details_sheet.dart

@@ -167,6 +167,7 @@ class _ProgramDetailsSheetContentState extends State<_ProgramDetailsSheetContent
                       width: 80,
                       height: 120,
                       fit: BoxFit.cover,
+                      memCacheHeight: (120 * MediaQuery.devicePixelRatioOf(context)).round(),
                       errorWidget: (_, _, _) => const SizedBox.shrink(),
                     ),
                   ),

lib/screens/media_detail_screen.dart

@@ -2482,11 +2482,17 @@ class _MediaDetailScreenState extends State<MediaDetailScreen>
                                       imageType: ImageType.art,
                                     );
 
+                                    final (_, memHeight) = PlexImageHelper.getMemCacheDimensions(
+                                      displayWidth: (mqSize.width * dpr).round(),
+                                      displayHeight: (mqSize.height * 0.6 * dpr).round(),
+                                      imageType: ImageType.art,
+                                    );
                                     return blurArtwork(
                                       CachedNetworkImage(
                                         imageUrl: imageUrl,
                                         cacheManager: PlexImageCacheManager.instance,
                                         fit: BoxFit.cover,
+                                        memCacheHeight: memHeight,
                                         placeholder: (context, url) => const PlaceholderContainer(),
                                         errorWidget: (context, url, error) => const PlaceholderContainer(),
                                       ),

lib/screens/profile/user_avatar_widget.dart

@@ -148,6 +148,7 @@ class UserAvatarWidget extends StatelessWidget {
                 width: size,
                 height: size,
                 fit: BoxFit.cover,
+                memCacheHeight: (size * MediaQuery.devicePixelRatioOf(context)).round(),
                 placeholder: (ctx, url) => _buildPlaceholderAvatar(theme),
                 errorWidget: (ctx, url, error) => _buildPlaceholderAvatar(theme),
               ),