Use mock ArrayBuffer allocator to avoid really allocating 1Gb.

test/mjsunit/mjsunit.status

Index: test/mjsunit/mjsunit.status
diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
index 5134313d5f77c289c20e9a818501a20d1d154559..d975f2b0ebe4475a4697b2b0debebaf08efcf27a 100644
--- a/test/mjsunit/mjsunit.status
+++ b/test/mjsunit/mjsunit.status
@@ -99,10 +99,6 @@
   ##############################################################################
   # Long running test that reproduces memory leak and should be run manually.
   'regress/regress-2073': [SKIP],
-
-  ##############################################################################
-  # Needs to allocate 1Gb of memory.
-  'regress/regress-319722-ArrayBuffer': [PASS, ['system == windows or system == macos or arch == arm or arch == android_arm or arch == android_ia32', SKIP]],
 }],  # ALWAYS
 
 ##############################################################################