Optimize SD card reader, sorting (#15395)

Marlin/src/lcd/extui_malyan_lcd.cpp

@@ -246,13 +246,13 @@ void process_lcd_p_command(const char* command) {
         // Find the name of the file to print.
         // It's needed to echo the PRINTFILE option.
         // The {S:L} command should've ensured the SD card was mounted.
-        card.getfilename(atoi(command));
+        card.selectFileByIndex(atoi(command));
 
         // There may be a difference in how V1 and V2 LCDs handle subdirectory
         // prints. Investigate more. This matches the V1 motion controller actions
         // but the V2 LCD switches to "print" mode on {SYS:DIR} response.
         if (card.flag.filenameIsDir) {
-          card.chdir(card.filename);
+          card.cd(card.filename);
           write_to_lcd_P(PSTR("{SYS:DIR}"));
         }
         else {
@@ -309,7 +309,7 @@ void process_lcd_s_command(const char* command) {
         char message_buffer[MAX_CURLY_COMMAND];
         uint16_t file_count = card.get_num_Files();
         for (uint16_t i = 0; i < file_count; i++) {
-          card.getfilename(i);
+          card.selectFileByIndex(i);
           sprintf_P(message_buffer, card.flag.filenameIsDir ? PSTR("{DIR:%s}") : PSTR("{FILE:%s}"), card.longest_filename());
           write_to_lcd(message_buffer);
         }