🩹 Remove poison wchar_t macro

Marlin/src/feature/power_monitor.cpp

@@ -53,23 +53,23 @@ PowerMonitor power_monitor; // Single instance - this calls the constructor
     void PowerMonitor::draw_current() {
       const float amps = getAmps();
       lcd_put_u8str(amps < 100 ? ftostr31ns(amps) : ui16tostr4rj((uint16_t)amps));
-      lcd_put_wchar('A');
+      lcd_put_lchar('A');
     }
   #endif
 
   #if ENABLED(POWER_MONITOR_VOLTAGE)
     void PowerMonitor::draw_voltage() {
       const float volts = getVolts();
       lcd_put_u8str(volts < 100 ? ftostr31ns(volts) : ui16tostr4rj((uint16_t)volts));
-      lcd_put_wchar('V');
+      lcd_put_lchar('V');
     }
   #endif
 
   #if HAS_POWER_MONITOR_WATTS
     void PowerMonitor::draw_power() {
       const float power = getPower();
       lcd_put_u8str(power < 100 ? ftostr31ns(power) : ui16tostr4rj((uint16_t)power));
-      lcd_put_wchar('W');
+      lcd_put_lchar('W');
     }
   #endif
 

Marlin/src/lcd/HD44780/lcdprint_hd44780.cpp

@@ -50,7 +50,7 @@ extern LCD_CLASS lcd;
 int lcd_glyph_height() { return 1; }
 
 typedef struct _hd44780_charmap_t {
-  wchar_t uchar; // the unicode char
+  lchar_t uchar; // the unicode char
   uint8_t idx;   // the glyph of the char in the ROM
   uint8_t idx2;  // the char used to be combined with the idx to simulate a single char
 } hd44780_charmap_t;
@@ -992,7 +992,7 @@ void lcd_put_int(const int i) { lcd.print(i); }
 
 // return < 0 on error
 // return the advanced cols
-int lcd_put_wchar_max(const wchar_t c, const pixel_len_t max_length) {
+int lcd_put_lchar_max(const lchar_t &c, const pixel_len_t max_length) {
 
   // find the HD44780 internal ROM first
   int ret;
@@ -1051,10 +1051,10 @@ static int lcd_put_u8str_max_cb(const char * utf8_str, read_byte_cb_t cb_read_by
   pixel_len_t ret = 0;
   const uint8_t *p = (uint8_t *)utf8_str;
   while (ret < max_length) {
-    wchar_t ch = 0;
-    p = get_utf8_value_cb(p, cb_read_byte, &ch);
-    if (!ch) break;
-    ret += lcd_put_wchar_max(ch, max_length - ret);
+    lchar_t wc;
+    p = get_utf8_value_cb(p, cb_read_byte, wc);
+    if (!wc) break;
+    ret += lcd_put_lchar_max(wc, max_length - ret);
   }
   return (int)ret;
 }