You could cheat with PySide6 and just filter out those executables (or the whole libexec folder in PySide6) when gathering the Python pieces for your app. Will a plugin ever conceivably need to use the lrelease, lupdate, rcc, and uic executables? They won't on Windows! Because I don't deliver any of the pyside exes installed to my Python Scripts directory.
I can't seem to find a libjpeg package/exe that gets installed into my Windows Python with the Pillow Module.