reStructuredText substitution references no longer linking to hyperlink target

[TDKorn]

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Bug

Body

In addition to the reStructuredText rendering problems mentioned in #113792, there's also an issue with substitution references - the hyperlink target isn't being processed anymore.

Example

The following RST

.. |.~.SearchQuery| replace:: ``SearchQuery``
.. _.~.SearchQuery: https://my-magento.readthedocs.io/en/latest/search_module.html#magento.search.SearchQuery

🔍 The |.~.SearchQuery|_ and Subclasses

Previous (Correct) Rendering

Current Rendering

Other Examples

See any of my repositories for examples of incorrect README.rst rendering

• https://github.com/TDKorn/sphinx-readme
• https://github.com/TDKorn/my-magento
• https://github.com/TDKorn/sphinx-github-style
• https://github.com/TDKorn/sphinx-inlinecode

[TDKorn]

See also github/markup#1799