Cursor position is wrong after adding peptide after - symbol

[AlexeyGirin]

Steps to Reproduce

1. Go to Macro - Sequence mode (clean canvas)
2. Load from HELM: RNA1{R(A)P.R(G)}|RNA2{R(U)}|RNA3{R(C)}$RNA1,RNA2,2:pair-2:pair|RNA1,RNA3,5:pair-2:pair$$$V2.0
   
3. Click between - and G symbols to switch to Edit mode
   
4. Switch editor to PEP mode and press C key

Actual behavior
Cursor jumps over G symbol to the right

Expected behavior
Cursor remain after C symbol and before G one

Versions

• Ketcher Version 3.1.0-rc.2 Build at 2025-02-07; 15:09:23
• Indigo Version 1.29.0-rc.1.0-g2e30df8f7-wasm32-wasm-clang-19.0.0
• Chrome Version 133.0.6943.54 (Official Build) (64-bit)
• Win10

Issue found while testing: #5942