fix(fw): account for zero values in storage on empty account check

src/ethereum_test_tools/common/types.py

@@ -245,7 +245,7 @@ def __ne__(self, other) -> bool:
 
     def __bool__(self) -> bool:
         """Returns True if the storage is not empty"""
-        return bool(self.root)
+        return any(v != 0 for _, v in self.root.items())
 
     def keys(self) -> set[StorageKeyValueType]:
         """Returns the keys of the storage"""