Refactor: wrap long tautomer rule literal

[Copilot]

Remove-me-section

• Notify reviewers about the pull request
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Generic request

• PR name follows the pattern #1234 – issue name
• branch name does not contain '#'
• base branch (master or release/xx) is correct
• PR is linked with the issue
• task status changed to "Code review"
• code follows product standards
• regression tests updated

For release/xx branch

• backmerge to master (or newer release/xx) branch is created

Optional

• unit-tests written
• documentation updated

Backmerge request

• PR name follows the pattern Backmerge: #1234 – issue name
• PR is linked with the issue
• base branch (master or release/xx) is correct
• code contains only backmerge changes

Bump request

• PR name follows the pattern Bump version to ...
• add brackets [ ] for 'skip ci' and put it into the body
• milestone is linked to PR
• all tickets are closed inside the relevant milestone

Description

Long SMARTS rule literals in molecule_tautomer_enumerator.cpp exceeded line-length guidelines, hurting readability.

• Formatting: Wrapped the longest tautomer SMARTS string into two adjacent literals to keep width within style limits while preserving behavior.

Example:

"[#1:0][N&v3,n,O,S:1][*:2]=,:[*:3][*:4]=,:[*:5][*:6]=,:[*:7][*:8]=,:[N&v3,n,O,S:9]>>"
"[N,n,O,S:1]=[A,a:2]-[A,a:3]=[A,a:4]-[A,a:5]=[A,a:6]-[A,a:7]=[A,a:8]-[N,n,O,S:9][#1:0]"

Original prompt

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This section details on the original issue you should resolve

<issue_title>Refactor: Lines of code should not be too long</issue_title>
<issue_description>Problem:
Lines of code should not be too long

Why is this an issue?
Having to scroll horizontally makes it harder to get a quick overview and understanding of any piece of code.

Problem locations:
core/indigo-core/molecule/src/molecule_tautomer_enumerator.cpp:397</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Refactor: Lines of code should not be too long #3383

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