fix: make vfox use java@25-graal and a .sdkmanrc with java=25-graal select the newest installed 25.0 build, as vfox install installs it, not a monthly feature release

fix: make vfox use java@25-graal and a .sdkmanrc with java=25-graal select the newest installed 25.0 build, as vfox install installs it, not a monthly feature release #61