CI: fix effects with wasmoo

Author: hhugo

dune

@@ -12,6 +12,12 @@
     (:standard --enable effects))
    (build_runtime_flags
     (:standard --enable effects)))
+  (wasm_of_ocaml
+   (compilation_mode separate)
+   (flags
+    (:standard --enable effects))
+   (build_runtime_flags
+    (:standard --enable effects)))
   (binaries
    (tools/node_wrapper.exe as node)
    (tools/node_wrapper.exe as node.exe)))