The toolbox/fdc3-conformance package that was recently ported into the FDC3 repo is the only package with a legacy webpack build, where all other applications or packages are based on a pure tsc build or vite.

Replace the webpack build in fdc3-conformance with vite to match other packages and confirm that the conformance tests still run and complete successfully against the FDC3 reference implementation (toolbox/fdc3-for-web/demo)