Light Novel Epub Translator Major Fix

Light Novel Epub Translator should now work with all epub files, that includes the one that gave you errors before.

Follow instruction in this discord message from our Sugoi Toolkit server

https://discord.com/channels/778778890239344641/1335813831573901424/1392085305502335007

(can ignore this) Previously, I translate Epub files with the assumption they all have the same internal structure. Epub is like a folder, when you unzip it, it directly gives you html files to translate. The problem is sometimes these html files are inside a subfolder with different names. I updated the code to take into account when html files are located inside a subfolder.