Fixed the house menu issue and Add Exit button

Thanks to the Curator "IndieGems" and Tchii report bugs:

• Fixed an issue where the house menu in the bottom-right corner occasionally failed to expand.

• Changed the English translation of "Lazy Cow" to "Leisurely Cow" in the guide.

• Fixed the issue where the language selection bar was empty by default during the first launch.

• Add "Exit" button at Left-Bottom of Main Window