ART: Fix 709-checker-varhandles

Fixes tests when --jvm is supplied to testrunner.

Bug: 74003350
Test: art/test/testrunner/testrunner.py --host --jvm -t 709
Change-Id: Ie2db30e382dedcd6898f0a2ccc3db5c8f8d7df0a
diff --git a/test/709-checker-varhandles/src-art/Main.java b/test/709-checker-varhandles/src/Main.java
similarity index 100%
rename from test/709-checker-varhandles/src-art/Main.java
rename to test/709-checker-varhandles/src/Main.java