Check for existance of "adaptiveFormats" in videos

Combined from commits:
- Check for existance of "adaptiveFormats" in videos
- Remove usage of ternary conditional

src/invidious/videos.cr

@@ -765,8 +765,8 @@ struct Video
     info["microformat"]?.try &.["playerMicroformatRenderer"]["isFamilySafe"]?.try &.as_bool || false
   end
 
-  def is_vr : Bool
-    info["streamingData"]?.try &.["adaptiveFormats"].as_a[0]?.try &.["projectionType"].as_s == "MESH" ? true : false || false
+  def is_vr : Bool?
+    info.dig?("streamingData", "adaptiveFormats", 0, "projectionType").try &.as_s == "MESH"
   end
 
   def wilson_score : Float64