Antisense creation is not possible if non eligable for antisense createion chain present in the selection

[AlexeyGirin]

Steps to Reproduce

1. Go to Macro - Snake mode
2. Load from HELM using paste from clipboard: RNA1{([25moe3],[5A6])([nC6n8A])P}|CHEM1{[4aPEGMal]}|RNA2{R(A)P}$RNA1,CHEM1,2:R2-1:R1$$$V2.0
   
3. Select all monomers on the canvas and call context menu

Actual behavior
Create Antisense Strand option is disabled

Expected behavior
Create Antisense Strand option is enabled. Antisense creation is possible

As per requirement:

1.3. If multiple chains are selected and more than one satisfies the previous requirements, the "Create Antisense Strand" option should appear, and if clicked, multiple antisense chains are created.

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

[AlexeyGirin]

Not a bug