System saves mixture ambiguous monomers as alternatives ambiguous monomers

[AlexeyGirin]

Steps to Reproduce

1. Toggle to Macro - Flex
2. Load from clipboard way: PEPTIDE1{(D,N,I)}$$$$V2.0
3. Load from clipboard way: PEPTIDE1{(D+N+I)}$$$$V2.0
   
4. Save canvas to HELM

Actual behavior
System saves both monomer as alternatives

Expected behavior
Resulted HELM should be PEPTIDE1{(D,N,I)}|PEPTIDE2{(D+N+I)}$$$$V2.0

Versions

• Ketcher Version 2.25.0-rc.1 Build at 2024-09-03; 15:31:03
• Indigo Toolkit Version 1.24.0-rc.1.0-gb8f099851-wasm32-wasm-clang-19.0.0
• Chrome Version 128.0.6613.114 (Official Build) (64-bit)
• Win10

Reference issues: epam/Indigo#2188

[AliaksandrDziarkach]

Ketcher generate ket with only one template:

{
    "root": {
        "nodes": [
            {
                "$ref": "monomer89"
            },
            {
                "$ref": "monomer90"
            }
        ],
        "connections": [],
        "templates": [
            {
                "$ref": "ambiguousMonomerTemplate-_D___Aspartic acid_N___Asparagine_I___Isoleucine"
            },
            {
                "$ref": "monomerTemplate-D___Aspartic acid"
            },
            {
                "$ref": "monomerTemplate-N___Asparagine"
            },
            {
                "$ref": "monomerTemplate-I___Isoleucine"
            }
        ]
    },
    "monomer89": {
        "type": "ambiguousMonomer",
        "id": "89",
        "position": {
            "x": 9.52500000000001,
            "y": -8.9
        },
        "alias": "%",
        "templateId": "_D___Aspartic acid_N___Asparagine_I___Isoleucine"
    },
    "ambiguousMonomerTemplate-_D___Aspartic acid_N___Asparagine_I___Isoleucine": {
        "type": "ambiguousMonomerTemplate",
        "id": "_D___Aspartic acid_N___Asparagine_I___Isoleucine",
        "alias": "%",
        "subtype": "alternatives",
        "options": [
            {
                "templateId": "D___Aspartic acid"
            },
            {
                "templateId": "N___Asparagine"
            },
            {
                "templateId": "I___Isoleucine"
            }
        ]
    },

[AlexeyGirin]

Verified.

Versions

• Ketcher Version 2.25.0-rc.3 Build at 2024-09-18; 16:24:03
• Indigo Toolkit Version 1.24.0-rc.3.0-g692080c62-wasm32-wasm-clang-19.0.0
• Chrome Version 129.0.6668.59 (Official Build) (64-bit)
• Win10