Overlapping long bonds when connecting monomers via R3-R3 attachment points

[Zhirnoff]

Description
When connecting monomers through R3-R3 attachment points, the long bonds overlap instead of being properly spaced apart. As per the expected behavior, these bonds should be treated as side-chain snake bonds and should not intersect.

Steps to Reproduce

1. Open Ketcher in Macro Mode -> Flex mode
2. Create a chain of monomers.
3. Connect the 1st and 5th monomers using R3-R3.
4. Connect the 2nd and 4th monomers using R3-R3.
5. Observe the placement of the long bonds.

Actual behavior
Long bonds between 1st-5th and 2nd-4th monomers overlap instead of being spaced apart.
The visual representation becomes unclear, making it difficult to interpret the structure.

Expected behavior
Long bonds should behave like side-chain snake bonds and should be properly spaced apart.
The bonds should not overlap, ensuring clear visibility and proper structural representation.

Desktop:

• OS: Windows 11
• Browser Chrome
• Version 131.0.6778.205 (Official Build) (64-bit)

Ketcher version
[Version 3.1.0-rc.2]
Indigo version
[Version 1.29.0-rc.1]

Issue found while testing #6167