message: fuzz: move init code to the CAddrManDeterministic constructor
  Move the addrman init code from the test case to a newly added
  `CAddrManDeterministic` constructor. This way it can be reused by other
  tests.
diff: @@ -25,10 +25,15 @@ void initialize_addrman()
  class CAddrManDeterministic : public CAddrMan
  {
  public:
  - void MakeDeterministic(const uint256& random_seed)
  + explicit CAddrManDeterministic(FuzzedDataProvider& fuzzed_data_provider)
  {
  - WITH_LOCK(cs, insecure_rand = FastRandomContext{random_seed});
  - Clear();
  + WITH_LOCK(cs, insecure_rand = FastRandomContext{ConsumeUInt256(fuzzed_data_provider)});
  + if (fuzzed_data_provider.ConsumeBool()) {
  + m_asmap = ConsumeRandomLengthBitVector(fuzzed_data_provider);
  + if (!SanityCheckASMap(m_asmap)) {
  + m_asmap.clear();
  + }
  + }
  }
  };
  @@ -36,14 +41,7 @@ FUZZ_TARGET_INIT(addrman, initialize_addrman)
  {
  FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  SetMockTime(ConsumeTime(fuzzed_data_provider));
  - CAddrManDeterministic addr_man;
  - addr_man.MakeDeterministic(ConsumeUInt256(fuzzed_data_provider));
  - if (fuzzed_data_provider.ConsumeBool()) {
  - addr_man.m_asmap = ConsumeRandomLengthBitVector(fuzzed_data_provider);
  - if (!SanityCheckASMap(addr_man.m_asmap)) {
  - addr_man.m_asmap.clear();
  - }
  - }
  + CAddrManDeterministic addr_man{fuzzed_data_provider};
  if (fuzzed_data_provider.ConsumeBool()) {
  const std::vector<uint8_t> serialized_data{ConsumeRandomLengthByteVector(fuzzed_data_provider)};
  CDataStream ds(serialized_data, SER_DISK, INIT_PROTO_VERSION);
  