fix: do not overwrite exparse.h during MSBuild compilation

fix: do not overwrite exparse.h during MSBuild compilation

Commit 09973560cc67c5277df8732ebba75da784afbe51 altered exparse.h to be a static
checked-in file instead of generated by Bison. This passed CI testing, but
unfortunately it was not noticed that on Windows MSBuild this resulted in the
build process still generating exparse.h and overwriting the in-repo copy.

This change reverts the Bison command used during MSBuild to generate the
default y.tab.c/y.tab.h output, more closely aligning it with the other build
systems.