Add a String.init range call.

Test that ART can compile / interpret a range call to String.init.

Test: 723-string-init-range
Change-Id: If0f9e68978aed91e8e5a9b6a135489cc7bd72120
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 2e2d7f7..02705bc 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -1119,6 +1119,7 @@
                   "691-hiddenapi-proxy",
                   "692-vdex-inmem-loader",
                   "693-vdex-inmem-loader-evict",
+                  "723-string-init-range",
                   "999-redefine-hiddenapi",
                   "1000-non-moving-space-stress",
                   "1001-app-image-regions",