Bingo NoSQL seems not to consider bond order in exact search

**Summary**
An exact structure search for 2-propanol via Python returns also acetone and vice vera. Therefore it seems the bond order is not considered in the exact search.

**Steps to Reproduce**
see attached Python script

[test_indigo_search.py](https://github.com/user-attachments/files/24876920/test_indigo_search.py)

**Actual behavior**
An exact structure search for 2-propanol via Python returns also acetone and vice vera, which is no exact match. See attached Python script above to reproduce issue.

**Expected behavior**
An exact search for acetone should not return 2-propanol and vice versa, since these are different molecules.

**Environment details:**
Bingo NoSQL
Indigo 1.36

**Additional information**
Using substructure search the expected results are returned.