Fix multi cleaning (#8978)

Right now, a movie Name `Iron Man Multi 1080p.mkv` will be searched as
`Iron
Man Multi` leading to no result.

The cleaning regex was containing multi but it looks like a typo joined
`multi` and `subs` in the same term.

Co-authored-by: Xavier-Do <xavier.dolle@gmail.com>

Emby.Naming/Common/NamingOptions.cs

@@ -153,7 +153,7 @@ namespace Emby.Naming.Common
 
             CleanStrings = new[]
             {
-                @"^\s*(?<cleaned>.+?)[ _\,\.\(\)\[\]\-](3d|sbs|tab|hsbs|htab|mvc|HDR|HDC|UHD|UltraHD|4k|ac3|dts|custom|dc|divx|divx5|dsr|dsrip|dutch|dvd|dvdrip|dvdscr|dvdscreener|screener|dvdivx|cam|fragment|fs|hdtv|hdrip|hdtvrip|internal|limited|multisubs|ntsc|ogg|ogm|pal|pdtv|proper|repack|rerip|retail|cd[1-9]|r5|bd5|bd|se|svcd|swedish|german|read.nfo|nfofix|unrated|ws|telesync|ts|telecine|tc|brrip|bdrip|480p|480i|576p|576i|720p|720i|1080p|1080i|2160p|hrhd|hrhdtv|hddvd|bluray|blu-ray|x264|x265|h264|h265|xvid|xvidvd|xxx|www.www|AAC|DTS|\[.*\])([ _\,\.\(\)\[\]\-]|$)",
+                @"^\s*(?<cleaned>.+?)[ _\,\.\(\)\[\]\-](3d|sbs|tab|hsbs|htab|mvc|HDR|HDC|UHD|UltraHD|4k|ac3|dts|custom|dc|divx|divx5|dsr|dsrip|dutch|dvd|dvdrip|dvdscr|dvdscreener|screener|dvdivx|cam|fragment|fs|hdtv|hdrip|hdtvrip|internal|limited|multi|subs|ntsc|ogg|ogm|pal|pdtv|proper|repack|rerip|retail|cd[1-9]|r5|bd5|bd|se|svcd|swedish|german|read.nfo|nfofix|unrated|ws|telesync|ts|telecine|tc|brrip|bdrip|480p|480i|576p|576i|720p|720i|1080p|1080i|2160p|hrhd|hrhdtv|hddvd|bluray|blu-ray|x264|x265|h264|h265|xvid|xvidvd|xxx|www.www|AAC|DTS|\[.*\])([ _\,\.\(\)\[\]\-]|$)",
                 @"^(?<cleaned>.+?)(\[.*\])",
                 @"^\s*(?<cleaned>.+?)\WE[0-9]+(-|~)E?[0-9]+(\W|$)",
                 @"^\s*\[[^\]]+\](?!\.\w+$)\s*(?<cleaned>.+)",

tests/Jellyfin.Naming.Tests/Video/CleanStringTests.cs

@@ -10,6 +10,7 @@ namespace Jellyfin.Naming.Tests.Video
 
         [Theory]
         [InlineData("Super movie 480p.mp4", "Super movie")]
+        [InlineData("Super movie Multi.mp4", "Super movie")]
         [InlineData("Super movie 480p 2001.mp4", "Super movie")]
         [InlineData("Super movie [480p].mp4", "Super movie")]
         [InlineData("480 Super movie [tmdbid=12345].mp4", "480 Super movie")]