Check debugger updates from official Mednafen 1.32.1 - check compatibility

[dshadoff]

Review official sources to for the following debugger updates, to see if they are compatible with the source in this repository:

September 14, 2023:
Debugger: In the memory editor, the Escape key will now exit text entry prompts and editing mode.

Debugger: Don't set a register's value to 0 when the register edit text entry string is empty or completely invalid.

Also:

November 29, 2023:
PCE, NES: Fixed broken rendering in the graphics debugger when the OSD pixel format is not the same as the emulation
video pixel format.