ci: add LLVM_SYMBOLIZER_PATH to Valgrind fuzz job

Otherwise:
```bash
	NEW_FUNC[1/23]: ==4710==WARNING: invalid path to external symbolizer!
==4710==WARNING: Failed to use and restart external symbolizer!
0xb72010  (/ci_container_base/ci/scratch/build-x86_64-pc-linux-gnu/src/test/fuzz/fuzz+0xa6a010) (BuildId: 2087ad415cb752eea259ed750f3b78a7fcb0b43b)
	NEW_FUNC[2/23]: 0xb72240  (/ci_container_base/ci/scratch/build-x86_64-pc-linux-gnu/src/test/fuzz/fuzz+0xa6a240) (BuildId: 2087ad415cb752eea259ed750f3b78a7fcb0b43b)

```

Github-Pull: bitcoin#30961
Rebased-From: c183258

Author: fanquake

ci/test/00_setup_env_native_fuzz_with_valgrind.sh

@@ -17,3 +17,4 @@ export FUZZ_TESTS_CONFIG="--valgrind"
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer CC=clang-16 CXX=clang++-16"
 export CCACHE_MAXSIZE=200M
+export LLVM_SYMBOLIZER_PATH="/usr/bin/llvm-symbolizer-16"