Reagents: When opening the CML saved file with arrow and reagent, the arrow and the reagent disappear

**Steps to Reproduce**
1. Launch Ketcher
2. Create structure with arrow and reagent molecule above arrow
3. Save file as CML
4. Open saved file

**Expected behavior**
The file is displayed on the canvas as it was saved with no distortion of the structure.

**Actual behavior**
When opening the CML saved file with arrow and reagent, the arrow and the reagent disappear

**Attachments**

**Indigo/Bingo version**
Version 1.8.3.0-gded13d6dc-x86_64-linux-gnu-11.2.1

**Additional context**
Related Ketcher issue: https://github.com/epam/Indigo/issues/3796
Related requirements issue: https://github.com/epam/ketcher/issues/1711
#187700054