PFW-1530 rename isErrorScreenSleeping to TuneMenuEntered

Firmware/mmu2.cpp

@@ -819,7 +819,7 @@ bool MMU2::manage_response(const bool move_axes, const bool turn_off_nozzle) {
             // the E may have some more moves to finish - wait for them
             ResumeHotendTemp();
             ResumeUnpark();             // We can now travel back to the tower or wherever we were when we saved.
-            if (!isErrorScreenSleeping())
+            if (!TuneMenuEntered())
             {
                 // If the error screen is sleeping (running 'Tune' menu)
                 // then don't reset retry attempts because we this will trigger

Firmware/mmu2_reporting.cpp

@@ -227,7 +227,7 @@ bool isErrorScreenRunning() {
     return is_mmu_error_monitor_active;
 }
 
-bool isErrorScreenSleeping() {
+bool TuneMenuEntered() {
     return putErrorScreenToSleep;
 }
 

Firmware/mmu2_reporting.h

@@ -28,7 +28,7 @@ bool isErrorScreenRunning();
 /// Return true if the error screen is sleeping in the background
 /// Error screen sleeps when the firmware is rendering complementary
 /// UI to resolve the error screen, for example tuning Idler Stallguard Threshold
-bool isErrorScreenSleeping();
+bool TuneMenuEntered();
 
 /// @brief Called when the MMU or MK3S sends operation error (even repeatedly).
 /// Render MMU error screen on the LCD. This must be non-blocking