Reenable the fuzzer

Author: aheejin

scripts/fuzz_opt.py

@@ -2524,7 +2524,7 @@ def handle(self, wasm):
     TrapsNeverHappen(),
     CtorEval(),
     Merge(),
-    # Split(), # https://github.com/WebAssembly/binaryen/issues/8510
+    Split(),
     RoundtripText(),
     ClusterFuzz(),
     Two(),