Antisense numbering become wrong (from left to right) after Undo operation

[AlexeyGirin]

Steps to Reproduce

1. Go to Macro mode - Snake mode
2. Load from HELM: RNA1{R(A,C,G,T)P.R(A,G,T)P.R(A,C,T)P.R(A,T)P}|RNA2{R(A,C,G,U)P.R(A,C,U)P.R(A,G,U)P.R(A,U)P}|RNA3{R(A)P}$RNA1,RNA2,2:pair-2:pair|RNA1,RNA2,5:pair-5:pair|RNA1,RNA2,8:pair-8:pair|RNA1,RNA2,11:pair-11:pair$$$V2.0
   
3. Connect DNA chain to second one
   
4. Press Undo button

Actual behavior
Antisense numbering become wrong (from left to right)

Expected behavior
Antisense numbering become the same (from right to left)

As per requirement:

If the left most sugar/amino acid of the sense chain has a terminal indicator of 5'/N, then the left most sugar/amino acid of the antisense chain should have a terminal indicator of 3'/C.
If the left most sugar/amino acid of the sense chain has a terminal indicator of 3'/C, then the left most sugar/amino acid of the antisense chain should have a terminal indicator of 5'/N.

Versions

• Ketcher Version 2.28.0-rc.3 Build at 2024-12-11; 14:32:57
• Indigo Version 1.27.0-rc.1.0-g8d656a341-wasm32-wasm-clang-19.0.0
• Chrome Version 131.0.6778.109 (Official Build) (64-bit)
• Win10

Issue found while testing - #5678