fix(settings): preserve quick resume timeout preference (#2101)

## Summary

### **What is the goal of this PR?**
This fixes an unintended settings side effect when cycling the `Sleep
Screen` option through `Quick Resume`.

Previously, selecting `Sleep Screen = Quick Resume` globally forced
`Quick Resume on Timeout = ON` and left it enabled even after the user
toggled `Sleep Screen` to another option within the same settings
session. Now the auto-enable behavior is scoped to the Settings screen
session:

- If `Quick Resume on Timeout` was already `ON` when entering Settings,
it stays `ON`.
- If it was `OFF`, selecting `Sleep Screen = Quick Resume` temporarily
turns it `ON`.
- If the user then switches away from `Quick Resume`, it turns back
`OFF`.

### **What changes are included?**

- Removes the global logic that permanently forced `Quick Resume on
Timeout` to `ON` whenever `Sleep Screen` was set to `Quick Resume`, even
if it was just due to toggling through the options.
- Adds Settings-screen session tracking so `Quick Resume on Timeout` is
only auto-enabled while the user has `Sleep Screen = Quick Resume`.
- Restores `Quick Resume on Timeout` back to `OFF` when the user
switches away, but only if it was `OFF` when they entered Settings.
- Preserves existing `ON` timeout preferences.
- Same behavior applies to the web settings

## Additional Context

- Tested this on device and via the settings UI
---

### AI Usage

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

src/CrossPointSettings.cpp

@@ -79,12 +79,6 @@ void CrossPointSettings::validateFrontButtonMapping(CrossPointSettings& settings
   }
 }
 
-void CrossPointSettings::normalizeDependentSettings(CrossPointSettings& settings) {
-  if (settings.sleepScreen == SLEEP_SCREEN_MODE::QUICK_RESUME) {
-    settings.quickResumeSleepScreen = QUICK_RESUME_SLEEP_SCREEN::QUICK_RESUME_AFTER_TIMEOUT;
-  }
-}
-
 bool CrossPointSettings::saveToFile() const {
   Storage.mkdir("/.crosspoint");
   return JsonSettingsIO::saveSettings(*this, SETTINGS_FILE_JSON);