[FIX] Fallback content-type as application/octet-stream for FileSystem uploads (#16776)
[FIX] Fallback content-type as application/octet-stream for FileSystem uploads (#16776)


VoiSmart/Rocket.Chat,VoiSmart/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat,Sing-Li/Rocket.Chat,VoiSmart/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,subesokun/Rocket.Chat