send all audio streams on hls channels with no preferred language (#142)

* Revert "fix search index threading (#141)"

This reverts commit 3fb6da0754.

* send all audio streams on hls channels with no preferred language

ErsatzTV/Shared/FragmentLetterAnchor.razor

@@ -1,4 +1,5 @@
-@using LanguageExt.UnsafeValueAccess
+@using ErsatzTV.Application.MediaCards
+@using LanguageExt.UnsafeValueAccess
 @typeparam TCard
 
 @{ var letters = new System.Collections.Generic.HashSet<char>(); }
@@ -24,4 +25,4 @@
     {
         @ChildContent
     }
-}
+}