test: test wasm trap handler is not enabled if there's not enough vmem

Author: joyeecheung

test/wasm-allocation/test-wasm-allocation-works-by-default.js

@@ -0,0 +1,6 @@
+// Test that with limited virtual memory space, WASM can still allocate memory
+// even without --disable-wasm-trap-handler.
+'use strict';
+
+require('../common');
+new WebAssembly.Memory({ initial: 10, maximum: 100 });