If you manage to get a NAND dump of a Wii which have the channel installed or if you find the WAD of the channel somewhere, it should work normally in Dolphin. Anyway, I wouldn't be too concerned if I were you. There's a point in the game where you have to do three tasks, in any order, the save glitch is triggered on that part only if you do those tasks in a very specific, non standard order as far as I remember. In other words, while doing the, let's call "main quest", follow it linearly and you should never trigger the glitch...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)