fix displaying local tv artwork in ui (#2136)

ErsatzTV/Pages/TelevisionEpisodeList.razor

@@ -78,10 +78,10 @@
                     {
                         <div style="display: flex; flex-direction: column; position: relative">
                             <MudHidden Invert="true" Breakpoint="Breakpoint.SmAndDown">
-                                <MudImage Src="@GetPosterUrl(episode.Poster)" Style="max-height: 220px; max-width: 265px; margin-left: auto; margin-right: auto;"/>
+                                <MudImage Src="@GetThumbnailUrl(episode.Poster)" Style="max-height: 220px; max-width: 265px; margin-left: auto; margin-right: auto;"/>
                             </MudHidden>
                             <MudHidden Invert="true" Breakpoint="Breakpoint.MdAndUp">
-                                <MudImage Src="@GetPosterUrl(episode.Poster)" Style="max-height: 220px; max-width: 392px; margin-left: auto; margin-right: auto;"/>
+                                <MudImage Src="@GetThumbnailUrl(episode.Poster)" Style="max-height: 220px; max-width: 392px; margin-left: auto; margin-right: auto;"/>
                             </MudHidden>
                             @if (episode.State == MediaItemState.FileNotFound)
                             {
@@ -333,4 +333,9 @@
         return poster.StartsWith("http://") || poster.StartsWith("https://") ? poster : $"artwork/posters/{poster}";
     }
 
+    private static string GetThumbnailUrl(string poster)
+    {
+        return poster.StartsWith("http://") || poster.StartsWith("https://") ? poster : $"artwork/thumbnails/{poster}";
+    }
+
 }

ErsatzTV/Pages/TelevisionSeasonList.razor

@@ -29,7 +29,7 @@
 <MudContainer MaxWidth="MaxWidth.Large" Style="margin-top: 100px">
     <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Spacing="6">
         <MudImage Src="@GetPosterUrl(_show.Poster)" Elevation="2" Class="rounded-lg" Style="max-height: 325px; margin-left: auto; margin-right: auto" />
-        <div style="display: flex; flex-direction: column; height: 100%">
+        <MudStack Row="false" Style="flex: 1">
             <MudStack Row="false">
                 <MudHidden Invert="true" Breakpoint="Breakpoint.SmAndDown">
                     <MudText Typo="Typo.h4" Class="media-item-title">@_show?.Title</MudText>
@@ -67,7 +67,7 @@
                     Add To Schedule
                 </MudButton>
             </MudStack>
-        </div>
+        </MudStack>
     </MudStack>
     <MudCard Class="mt-6 mb-6">
         <MudCardContent>