Layout action shouldn't add pluses for reactions without pluses with several reactants/products in a row
- Dominant language
- C++
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- Avg merge
- 2d 11h
- Merged PRs (30d)
- 24
Description
**Steps to Reproduce**
1. Make a reaction of several corrupted chemical elements without pluses on the Canvas:

2. Click on Layout
**Actual behavior**
Chemical elements are repaired and aligned relative to the arrow, but plusses are added:

**Expected behavior**
Chemical elements are repaired and aligned relative to the arrow, no plusses are added:

**Environment details:**
- Ketcher [Version 2.24.0-rc.3] Build at 2024-08-20; 13:16:59
- Indigo Version 1.23.0-rc.2.0-g6a2a7526a-wasm32-wasm-clang-19.0.0
- OS: Windows 11 Enterprise
- Browser: Chrome, Version 127.0.6533.100 (Official Build) (64-bit)
**Additional context**
- Issue is detected during the investigation of Cascade Reaction feature - https://github.com/epam/Indigo/issues/2128
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