Again, no, this won't help you with MCE Keyboard - LE 9.2 doesn't ship with any configuration files for that.
LE with newer ir-keytable comes with mce_keyboard.toml, which is basically the same as rc6_mce with both rc-6 and mce_kbd protocols enabled.
Still, you don't want to use that, mcd_kbd doesn't use key configuration from that file - the driver sends fixed KEY_A etc (like normal keyboards) which aren't really supported in LE's/Kodi's IR remote stack (you'd need to extend Lircmap.xml to translate KEY_A or whatever to some button name).
Simply stay away from MCE Keyboard, that causes lots of unnecessary troubles.
so long,
Hias