Fix: Fixed crash that would occur when trying to display tags (#12764)

Author: hishitetsu

src/Files.App/Filesystem/FileTagsHelper.cs

@@ -26,7 +26,7 @@ public static class FileTagsHelper
 		public static string[] ReadFileTag(string filePath)
 		{
 			var tagString = NativeFileOperationsHelper.ReadStringFromFile($"{filePath}:files");
-			return tagString?.Split(',');
+			return tagString?.Split(',', StringSplitOptions.RemoveEmptyEntries);
 		}
 
 		public static void WriteFileTag(string filePath, string[] tag)

src/Files.App/Services/Settings/FileTagsSettingsService.cs

@@ -80,7 +80,7 @@ public TagViewModel GetTagById(string uid)
 
 		public IList<TagViewModel> GetTagsByIds(string[] uids)
 		{
-			return uids?.Select(x => GetTagById(x)).ToList();
+			return uids?.Select(x => GetTagById(x)).Where(x => x is not null).ToList();
 		}
 
 		public IEnumerable<TagViewModel> GetTagsByName(string tagName)