Ensure overlay is hidden when opening book

src/pyj/read_book/overlay.pyj

@@ -325,6 +325,7 @@ class Overlay:
     def hide(self):
         while self.panels.length:
             self.hide_current_panel()
+        self.container.style.display = 'none'
 
     def delete_book(self):
         self.hide_current_panel()

src/pyj/read_book/ui.pyj

@@ -414,6 +414,7 @@ class ReadUI:
             if str(current_query[k]) is not str(current_state[k]):
                 same = False
                 break
+        self.view.overlay.hide()
         if same:
             if current_state.bookpos is not current_query.bookpos and current_query.bookpos:
                 self.view.goto_bookpos(current_query.bookpos)

src/pyj/read_book/view.pyj

@@ -280,6 +280,7 @@ class View:
         return name, cfi
 
     def display_book(self, book):
+        self.overlay.hide()
         self.book = current_book.book = book
         self.ui.db.update_last_read_time(book)
         self.loaded_resources = {}