Copy _currentHyperlinkId when copying the buffer (#8074)

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## Summary of the Pull Request
Realized that we don't copy the current hyperlink id when we copy buffers, quick fix for that

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## PR Checklist
* [ ] Closes #xxx
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [ ] Tests added/passed
* [ ] Documentation updated. If checked, please file a pull request on [our docs repo](https://github.com/MicrosoftDocs/terminal) and link it here: #xxx
* [ ] Schema updated.
* [x] I work here

src/buffer/out/textBuffer.cpp

@@ -2350,11 +2350,13 @@ std::wstring TextBuffer::GetCustomIdFromId(uint16_t id) const
 }
 
 // Method Description:
-// - Copies the hyperlink/customID maps of the old buffer into this one
+// - Copies the hyperlink/customID maps of the old buffer into this one,
+//   also copies currentHyperlinkId
 // Arguments:
 // - The other buffer
 void TextBuffer::CopyHyperlinkMaps(const TextBuffer& other)
 {
     _hyperlinkMap = other._hyperlinkMap;
     _hyperlinkCustomIdMap = other._hyperlinkCustomIdMap;
+    _currentHyperlinkId = other._currentHyperlinkId;
 }