refactor: Add __bool__ method to CacheMiss class

This commit adds the __bool__ method to the CacheMiss class in the utils.py file. The __bool__ method returns False, allowing the CacheMiss object to be treated as False in boolean expressions. This change improves the functionality and usability of the CacheMiss class.

src/backend/base/langflow/services/cache/utils.py

@@ -23,6 +23,9 @@ class CacheMiss:
     def __repr__(self):
         return "<CACHE_MISS>"
 
+    def __bool__(self):
+        return False
+
 
 def create_cache_folder(func):
     def wrapper(*args, **kwargs):