Enforce sensor range for temperature target (#18465)

* Mitigate stepper timeout

* Add CHAMBER PWM code

* Structured thermistor tables

* Fix reversed sensor ranges

* Prevent temps outside sensor range

Marlin/src/gcode/control/M17_M18_M84.cpp

@@ -50,6 +50,7 @@ void GcodeSuite::M17() {
  */
 void GcodeSuite::M18_M84() {
   if (parser.seenval('S')) {
+    reset_stepper_timeout();
     stepper_inactive_time = parser.value_millis_from_seconds();
   }
   else {

Marlin/src/gcode/control/M85.cpp

@@ -21,7 +21,6 @@
  */
 
 #include "../gcode.h"
-#include "../../MarlinCore.h" // for max_inactive_time
 
 /**
  * M85: Set inactivity shutdown timer with parameter S<seconds>. To disable set zero (default)

Marlin/src/gcode/control/T.cpp

@@ -53,6 +53,9 @@ void GcodeSuite::T(const uint8_t tool_index) {
     DEBUG_POS("BEFORE", current_position);
   }
 
+  // Count this command as movement / activity
+  reset_stepper_timeout();
+
   #if ENABLED(PRUSA_MMU2)
     if (parser.string_arg) {
       mmu2.tool_change(parser.string_arg);   // Special commands T?/Tx/Tc