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## Summary of the Pull Request
Make it so you can navigate pane focus without unzooming.
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## PR Checklist
* [x] Closes#7215
* [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.
* [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx
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## Detailed Description of the Pull Request / Additional comments
- Slight refactor to bring the MRU pane logic into the `NavigateDirection` function
- The actual zoom behavior was not a problem, the only issue is that because most of the panes weren't in the UI tree I had to disable using the actual sizes. There is nothing wrong with that, since the synthetic sizing is required anyways, but I'm curious what other peoples' thoughts are.
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## Validation Steps Performed
![output](https://user-images.githubusercontent.com/6185249/130901911-91676da2-db40-412d-b726-61a3f559ae17.gif)