When several reactions on canvas are positioned one under another, reaction(s) can't be saved correctly to RXN or RDF

[ivanmaslow]

Steps to Reproduce

1. Add to Canvas reaction from KET:
   ket-issue-2.zip
   
2. Click on Save to RXN (RDF)

Actual Result

• All reactants from different reactions are united together and all products are united together:
  

Expected Result

• Only one reaction should be saved to RXN (the set of separate reactions should be saved to RDF)

Environment details

• Detected on CI-CD environment with 2309-update-layout build
• Ketcher [Version 2.25.0-rc.2] Build at 2024-09-30; 06:32:00
• Version 1.25.0-dev.2.6-g0e1cfa10-wasm32-wasm-clang-12.0.0
• Desktop, Windows 11 Enterprise
• Chrome Version 129.0.6668.71 (Official Build) (64-bit)

Notes

• Also make sure that layout action is working properly, now after the layout action reactions just are centered:
  

• Issue is detected during exploratory testing of Save to RDF feature - Save multi reactions (pathway, single, edge cases) to RDF #2237

[ivanmaslow]

Pre-tested on aws_ci environment with Ketcher master and Indigo 2407-branch-ordering branches:

• Ketcher [Version 2.26.0-rc.1] Build at 2024-10-24; 12:25:38;
• Indigo Version 1.25.0-rc.3.18-gcdee98d4-wasm32-wasm-clang-12.0.0
• Desktop, Windows 11 Enterprise
• Chrome Version 130.0.6723.70 (Official Build) (64-bit)

It can be saved correctly to RXN, but not the first reaction is saved to RXN separate defect - #2482 and there is a problem with the arrow after loading:

It can be correctly saved to RDF and loaded:

But there is an issue with ordering if we make a Undo/Redo for adding of reactions, after that if user makes Layout or save/load to/from RDF, ordering will be changed:

[ivanmaslow]

The fix is tested on RC SA env:

• Ketcher [Version 2.26.0-rc.6] Build at 2024-10-25; 09:57:12;
• Indigo Version 1.25.0-rc.4.0-g8862ccb7e-wasm32-wasm-clang-19.0.0
• Desktop, Windows 11 Enterprise
• Chrome, Version 130.0.6723.70 (Official Build) (64-bit)

As mentioned above the case from the defect is fixed and reaction can be saved correctly to RXN/RDF:

As for issue with not correct arrow after loading from RXN, it will be fixed in scope of these tasks:

• Arrow changes direction after loading saved RXN single reaction if the elements were too close to single arrow on save #2493
• The arrow is displayed incorrect when import from rxn file #2478
• The arrow is displayed In the other direction after importing from rxn file #2479

As for problem that not the first reaction on Canvas is saved to RXN - will be fixed in scope of #2482

As for problem with Undo/Redo, new defect is reported - #2585