Arrow changes direction after loading saved RXN single reaction if the elements were too close to single arrow on save

[ivanmaslow]

Steps to Reproduce

1. Add a reaction with Multi-Tailed Arrow to Canvas, add chemical elements very close to the single arrow or add it from the KET file below:
   ketcher (1).zip
   

2. Click on Save as..., select RXN V2000/V3000

3. Copy RXN from the preview and paste to Canvas

Actual Result

• Arrow changed the direction:
  

Expected Result

• 2:1 reaction with a single arrow and plus is displayed:
  

Environment details

• Detected on CI-CD master env
• Ketcher [Version 2.25.0-rc.2] Build at 2024-10-03; 05:09:39
• Indigo Version 1.25.0-dev.3.4-g6469f588-wasm32-wasm-clang-12.0.0
• Desktop, Windows 11 Enterprise
• Chrome Version 129.0.6668.71 (Official Build) (64-bit)

Notes

• Issue is detected during exploratory testing of Update Save to RXN for cascade reactions feature, but it's not caused by Cascade Reaction changes - Update Save to RXN for pathway reactions #2234

[AlexeyGirin]

Spread molecules to put default size arrow inside as per AlexanderSavelyev decision

[Zhirnoff]

Tested. Bug fixed.

Desktop:

• OS: Windows 11
• Browser Chrome
• Version 128.0.6613.120 (Official Build) (64-bit)

Ketcher version
[Version 2.26.0-rc.9]
Indigo version
[Version 1.25.0-rc.5]