Emby-UWP can't dislay external subtitle with 2 or more suffixes in it's name

[Mateusz Krawczyński]

Subtitle file is selectable in the player, but the content of the file is not displayed.

For example: Subtitle '30 Days of night(2007).english.forced.srt' doesn't work while '30 Days of night(2007).english.srt' works.