Fix SUBSTITUTE expanding dollar sequences in replacement text

[vera-rubin]

Context

When we omit occurrence, SUBSTITUTE interprets dollar sequences in new_text as JavaScript replacement patterns. We now return replacement text from a callback so it's inserted literally.

How did you test your changes?

We added a regression test and ran the public Jest suite, CommonJS build, and lint.

Types of changes

• Breaking change (a fix or a feature because of which an existing functionality doesn't work as expected anymore)
• New feature or improvement (a non-breaking change that adds functionality)
• Bug fix (a non-breaking change that fixes an issue)
• Additional language file, or a change to an existing language file (translations)
• Change to the documentation

Related issues:

Fixes #1808

Checklist:

• I have reviewed the guidelines about Contributing to HyperFormula and I confirm that my code follows the code style of this project.
• I have signed the Contributor License Agreement.
• My change is compliant with the OpenDocument standard.
• My change is compatible with Microsoft Excel.
• My change is compatible with Google Sheets.
• I described my changes in the CHANGELOG.md file.
• My changes require a documentation update.
• My changes require a migration guide.

— ChipLab

[cla-external-contractor-signup]

@vera-rubin Thank you very much for taking the time to prepare the pull request. There's one thing holding us back from using those changes in production — could you please sign the CLA: https://cla.handsontable.com/sign?pr=handsontable%2Fhyperformula%231809
Thanks in advance 🙇

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[cla-external-contractor-signup]

@vera-rubin Thank you for signing the CLA! The status check has been updated and your pull request is now unblocked. 🎉