fix: small QoL: return to the last selected menu location (#1629)

## Summary

* **What is the goal of this PR?** Small UX improvement to the Home
screen by preserving the last selected cursor position when returning to
it.

It supersedes #985 and #1103, which are both significantly outdated and
hundreds of commits behind master.

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### AI Usage

Did you use AI tools to help write this code? _**< YES >**_

src/activities/Activity.cpp

@@ -10,7 +10,7 @@ void Activity::requestUpdate(bool immediate) { activityManager.requestUpdate(imm
 
 void Activity::requestUpdateAndWait() { activityManager.requestUpdateAndWait(); }
 
-void Activity::onGoHome() { activityManager.goHome(); }
+void Activity::onGoHome(HomeMenuItem item) { activityManager.goHome(item); }
 
 void Activity::onSelectBook(const std::string& path) { activityManager.goToReader(path); }