ResolutionException when launching client or data generator

[Daedalus4096]

I'm having trouble updating my mod Primal Magick to MC1.20.4 on Forge 49.0.48 with JEI 17.3.0.49. I believe I've followed the Forge and JEI instructions correctly, but I'm getting the following exception when I try to run the data generator:

java.lang.module.ResolutionException: Modules jei._1._20._4.common.api and jei export package mezz.jei.api.runtime to module primalmagick

Full output sample here, and the build.gradle file in question is here. Trying to run the game client results in a different type of exception, but with the same inner error. It looks like I'm getting two separate JEI modules which are interfering with each other, but I'm not sure why that would be.

Things I've discovered in my investigations so far:

• Blowing away my repository and re-cloning from remote does not fix the error, even in combination with nuking my entire gradle cache.  I'm *mostly* sure that it's not just because my workspace is in a bad state.
• Commenting out line 144 of the build.gradle file, where it specifies the runtime-only deobf dependency of JEI makes the exception not get thrown, but means that JEI is not active in my debug runtime.  While this is a partial workaround for the issue, it leaves me unable to debug any of my JEI integration code, and so is far from ideal.
• Most maddeningly, running the client and/or data generator from the gradle CLI *also* causes the bug to not reproduce.  Data files get generated, and the client even runs with JEI; it just leaves me unable to trace through the code.

I've already reached out to Mezz on the JEI Discord and he's stumped as well.  If I didn't know better, I'd say that one of the "compileOnly" or "runtimeOnly" directives are being executed when they shouldn't be, but why that would be happening now, or happening only when run in Eclipse, is beyond me. 

If anyone knows how to resolve this issue, I would be very grateful.  Thank you, and stay safe.