adjust JdkCommandLineSetup#requestDownloadFromTarget to meet the new Volume interface -- there is no need to rely on UploadableVolume more

(cherry picked from commit 42f4b95c9084806114ad74e420c137841118e112)

IDEA-CR-70924

GitOrigin-RevId: 844a1f1a1d4c7002ac23d30a21d48236cc8fc956