Fix some pin inits

Marlin/src/lcd/extui/lib/anycubic_i3mega/anycubic_i3mega_lcd.cpp

@@ -123,12 +123,10 @@ void AnycubicTFTClass::OnSetup() {
 
   // initialise the state of the key pins running on the tft
   #if ENABLED(SDSUPPORT) && PIN_EXISTS(SD_DETECT)
-    pinMode(SD_DETECT_PIN, INPUT);
+    SET_INPUT_PULLUP(SD_DETECT_PIN);
-    WRITE(SD_DETECT_PIN, HIGH);
   #endif
   #if ENABLED(FILAMENT_RUNOUT_SENSOR)
-    pinMode(FIL_RUNOUT_PIN, INPUT);
+    SET_INPUT_PULLUP(FIL_RUNOUT_PIN);
-    WRITE(FIL_RUNOUT_PIN, HIGH);
   #endif
 
   mediaPrintingState = AMPRINTSTATE_NOT_PRINTING;

Marlin/src/lcd/extui/lib/mks_ui/printer_operation.cpp

@@ -161,13 +161,13 @@ void printer_state_polling() {
 
 void filament_pin_setup() {
   #if PIN_EXISTS(MT_DET_1)
-    pinMode(MT_DET_1_PIN, INPUT_PULLUP);
+    SET_INPUT_PULLUP(MT_DET_1_PIN);
   #endif
   #if PIN_EXISTS(MT_DET_2)
-    pinMode(MT_DET_2_PIN, INPUT_PULLUP);
+    SET_INPUT_PULLUP(MT_DET_2_PIN);
   #endif
   #if PIN_EXISTS(MT_DET_3)
-    pinMode(MT_DET_3_PIN, INPUT_PULLUP);
+    SET_INPUT_PULLUP(MT_DET_3_PIN);
   #endif
 }