Import/export multi-tails in KET

[ivanmaslow]

• Layout and indigo functions work properly for chemical elements, list of actions is described here - Import/export images in KET #2144
• Multi-tailed arrow shouldn't disappear after indigo actions
• Layout should change a size of the Multi-Tailed Arrow to default on the indigo side and normalize the positions of elements near the multi-tailed arrow

[ivanmaslow]

Exploratory testing is completed on RC Remote environment:

• Ketcher [Version 2.26.0-rc.1] Build at 2024-10-04; 18:45:04
• Indigo Version 1.25.0-rc.1.0-g704673fcb-x86_64-linux-gnu-11.2.1
• Desktop, Windows 11 Enterprise
• Chrome Version 129.0.6668.100 (Official Build) (64-bit)

Tests are added and updated. The core functionality doesn't work, so it will be retested on rc2, defects below are detected:

• Indigo functions doesn't work prorerly: Aromatize, Dearomatize, Layout, Clean Up, Hydrogens, Auto-Mapping Tool #2422
• Reactions change the ordering on canvas after layout or save/load to/from RDF actions #2452
• Layout and Save to RXN/RDF works not correctly when Multi-Tailed Arrow is on canvas without elements near tails or head, If no elements are near multi-tailed arrow, layout action should consider it as empty elements #2424
• Reaction with the single arrow is changed to reaction with Multi-Tailed Arrow after layout action #2451

Detected on RC2:

• Reaction Auto-Mapping Tool doesn't work for single and cascade reactions with Multi-Tailed Arrow #2556

[ivanmaslow]

The task is retested in scope of #2422, for more details check the comments there.