embind_test: Use STACK_SIZE, not TOTAL_STACK. (#18793)

Author: waywardmonkeys

test/test_other.py

@@ -2716,7 +2716,7 @@ def test_embind(self, extra_args):
          '-sWASM_ASYNC_COMPILATION=0',
          # This test uses a `CustomSmartPtr` class which has 1MB of data embedded in
          # it which means we need more stack space than normal.
-         '-sTOTAL_STACK=2MB',
+         '-sSTACK_SIZE=2MB',
          '-sIN_TEST_HARNESS'] + args)
 
       if '-sDYNAMIC_EXECUTION=0' in args: