Export of ambiguous monomers doesn't work (error appears) to any export format (even to SVG/PNG) except KET

[AlexeyGirin]

Steps to Reproduce

1. Toggle to Macro - Flex
2. Put any ambiguous monomer on the canvas ( X peptide in my case)
3. Toggle to Molecules mode
4. Press Save button

Note: It also doesn't save ambiguous monomers in macro mode to the following formats: MDL Mofile V3000, Sequence, FASTA, and IDT.

Actual behavior System throws an error: Given string could not be loaded as (query or plain) molecule or reaction, see the error messages: 'molecule json loader: Unknows node type: ambiguousMonomer', 'RXN loader: bad header {', 'RXN loader: bad header {', 'molecule json loader: Unknows node type: ambiguousMonomer'

Expected behavior No exception. Works as intended

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: https://github.com/epam/ketcher/issues/4557

[AlexeyGirin]

Split to two bugs - SVG/PNG (1.25) one and all the rest to second one (1.25)