Update file name in INITIAL_CONTENTS_IGNORE (#6425)

The test file was renamed, but the fuzzer still used the old name in
INITIAL_CONTENTS_IGNORE.

Author: tlively

scripts/fuzz_opt.py

@@ -331,7 +331,7 @@ def is_git_repo():
     'typed_continuations_suspend.wast',
     # New EH implementation is in progress
     'exception-handling.wast',
-    'translate-eh-old-to-new.wast',
+    'translate-to-new-eh.wast',
     'rse-eh.wast',
     # Non-UTF8 strings trap in V8, and have limitations in our interpreter
     'string-lowering.wast',