fix: only close add tag menu with no search (#685)

Author: SkeleyM

tagstudio/src/qt/modals/tag_search.py

@@ -70,7 +70,7 @@ def on_return(self, text: str):
             self.update_tags()
         else:
             self.search_field.setFocus()
-        self.parentWidget().hide()
+            self.parentWidget().hide()
 
     def update_tags(self, query: str | None = None):
         logger.info("[Tag Search Modal] Updating Tags")