🩹 Fix DWIN float debugging (#23601)

Marlin/src/lcd/extui/dgus/fysetc/DGUSScreenHandler.h

   static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
     if (var.memadr) {
       float f = *(float *)var.memadr;
-      DEBUG_ECHOLNPGM(" >> ", f, 6);
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
       f *= cpow(10, decimals);
       dgusdisplay.WriteVariable(var.VP, (int16_t)f);
     }

Marlin/src/lcd/extui/dgus/hiprecy/DGUSScreenHandler.h

   static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
     if (var.memadr) {
       float f = *(float *)var.memadr;
-      DEBUG_ECHOLNPGM(" >> ", f, 6);
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
       f *= cpow(10, decimals);
       dgusdisplay.WriteVariable(var.VP, (int16_t)f);
     }

Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.cpp

 
 void DGUSScreenHandler::DGUSLCD_SendBabyStepToDisplay_MKS(DGUS_VP_Variable &var) {
   float value = current_position.z;
-  DEBUG_ECHOLNPGM(" >> ", value, 6);
+  DEBUG_ECHOLNPAIR_F(" >> ", value, 6);
   value *= cpow(10, 2);
   dgusdisplay.WriteVariable(VP_SD_Print_Baby, (uint16_t)value);
 }
   else if (manualMoveStep == 0x02) manualMoveStep =  100;
   else if (manualMoveStep == 0x03) manualMoveStep = 1000;
 
-  DEBUG_ECHOLNPGM("QUEUE LEN:", queue.length);
+  DEBUG_ECHOLNPGM("QUEUE LEN:", queue.ring_buffer.length);
 
   if (!print_job_timer.isPaused() && !queue.ring_buffer.empty())
     return;

Marlin/src/lcd/extui/dgus/mks/DGUSScreenHandler.h

   static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
     if (var.memadr) {
       float f = *(float *)var.memadr;
-      DEBUG_ECHOLNPGM(" >> ", f, 6);
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
       f *= cpow(10, decimals);
       dgusdisplay.WriteVariable(var.VP, (int16_t)f);
     }

Marlin/src/lcd/extui/dgus/origin/DGUSScreenHandler.h

   static void DGUSLCD_SendFloatAsIntValueToDisplay(DGUS_VP_Variable &var) {
     if (var.memadr) {
       float f = *(float *)var.memadr;
-      DEBUG_ECHOLNPGM(" >> ", f, 6);
+      DEBUG_ECHOLNPAIR_F(" >> ", f, 6);
       f *= cpow(10, decimals);
       dgusdisplay.WriteVariable(var.VP, (int16_t)f);
     }