Inconsistence for nucleotides Letters in the Sequence mode

[NadezhdaPeskun]

Steps to Reproduce

1. Switch to the Macro mode
2. Open Sequence mode
3. Open KET file with modified nucleotides
   ketcher (CCPC).zip
4. see tooltips

Actual behavior
Letters have identical markers ("C") but different links and tooltips.
Without Phosphate in the middle of the chain

With Phosphate in the middle of the chain

With Phosphate in the end of the chain

Expected behavior
Letters have identical markers ("C") should have the same links and tooltips.
Nucleotide without Phosphate would be nice to mark separately (White point, from BA).

Related:

• Macro: Displaying modified nucleotide chains in sequence representation #3734

Desktop (please complete the following information):

• OS: Windows 10 Pro (version 22H2) x64
• Browser: Сhrome
• Version: (123.0.6312.86) x64

Version 2.20.0-rc.2
Build at 2024-04-05; 05:31:45

Indigo Toolkit
Version 1.20.0-dev.1.20-gfe00419b-wasm32-wasm-clang-12.0.0

[AlexeyGirin]

Duplicates #4399