[v8] Fix Sandbox fuzzer

I accidentally dropped the --sandbox-fuzzing flag in
commit 5966bb0.

Change-Id: I753bf5ba49dd422b0955dc1beaf8ce176e878a0d
Reviewed-on: https://chrome-internal-review.googlesource.com/c/v8/fuzzilli/+/8741378
Auto-Submit: Matthias Liedtke <mliedtke@google.com>
Reviewed-by: Danylo Mocherniuk <mdanylo@google.com>
Commit-Queue: Danylo Mocherniuk <mdanylo@google.com>

Author: Liedtke

Sources/FuzzilliCli/Profiles/V8CommonProfile.swift

@@ -671,6 +671,11 @@ public func v8ProcessArgs(randomize: Bool, forSandbox: Bool) -> [String] {
         "--expose-fast-api",
         "--wasm-test-streaming", // WebAssembly.compileStreaming & WebAssembly.instantiateStreaming()
     ]
+    if forSandbox {
+        args.append("--sandbox-fuzzing")
+        // This is so that we get an ASan splat directly in the reproducer file.
+        args.append("--disable-in-process-stack-traces")
+    }
 
     guard randomize else { return args }