Fix ESP32 TOGGLE() with I2S expander (#13743)

Marlin/src/HAL/HAL_ESP32/fastio_ESP32.h

 #define _PULLUP(IO, v)          pinMode(IO, v ? INPUT_PULLUP : INPUT)
 
 // Read a pin wrapper
-#define READ(IO)                digitalRead(IO)
+#define READ(IO)                (TEST(IO, 7) ? i2s_state(IO & 0x7F) : digitalRead(IO))
 
 // Write to a pin wrapper
 #define WRITE(IO, v)            (TEST(IO, 7) ? i2s_write(IO & 0x7F, v) : digitalWrite(IO, v))

Marlin/src/HAL/HAL_ESP32/i2s.cpp

   SET_BIT_TO(i2s_port_data, pin, val);
 }
 
+uint8_t i2s_state(uint8_t pin) {
+  return TEST(i2s_port_data, pin);
+}
+
 void i2s_push_sample() {
   dma.current[dma.rw_pos++] = i2s_port_data;
 }

Marlin/src/HAL/HAL_ESP32/i2s.h

 
 int i2s_init();
 
+uint8_t i2s_state(uint8_t pin);
+
 void i2s_write(uint8_t pin, uint8_t val);
 
 void i2s_push_sample();