Preview: In case of peptide monomers are on canvas, error "Cannot save molecule in IDT format - monomer(s) … doesn’t have IDT code." should appear.

[NadezhdaPeskun]

Steps to Reproduce

1. Switch to Macro

2. Open example of KET file with Peptides
   ketcher (end peptide).zip
   ketcher (middle Peptide).zip

3. try to Save as IDT

Actual behavior
Incorrect error message about Peptides

Expected behavior
According BA solution and

• Macro: UI support for IDT import/export ketcher#4495
  In case of peptide monomers are on canvas, error "Cannot save molecule in IDT format - monomer(s) … doesn’t have IDT code." should appear.

Related:

• Preview: CHEM are ignored without any messages or incorrect message while we save sequence with CHEM to IDT ketcher#4639
• Preview: CHEM are ignored without any messages or incorrect message while we save sequence with CHEM to IDT #1958
• Preview: In case of peptide monomers are on canvas, error "Cannot save molecule in IDT format - monomer(s) … doesn’t have IDT code." should appear. ketcher#4634

Win11
Chrome: Version 123.0.6312.123 (Official Build) (64-bit)

Version
CI Preview:
Ketcher
[Version 2.22-rc.1] CI
[Indigo Toolkit] CI
Version 1.21.0-rc.1

[AliaksandrDziarkach]

Discussed with @olganaz and decided that more specific message is ok.