Merge bitcoin/bitcoin#27549: fuzz: addrman, add coverage for network field in Select(), Size() and GetAddr()

35a2175 fuzz: addrman, add coverage for `network` field in `Select()`, `Size()` and `GetAddr()` (brunoerg)

Pull request description:

  This PR adds fuzz coverage for `network` field in `Select()`, `Size()` and `GetAddr()`, there was only call to them without passing a network.
  https://marcofalke.github.io/b-c-cov/fuzz.coverage/src/addrman.cpp.gcov.html

ACKs for top commit:
  amitiuttarwar:
    for the record, ACK 35a2175 - only small changes from the version (previously) proposed in 27213
  achow101:
    ACK 35a2175
  mzumsande:
    Code Review ACK 35a2175, haven't tested this yet, but I will let the fuzzer run for a while now.

Tree-SHA512: dddb8322298d6c373c8e68d57538470b11825a9a310a355828c351d5c0b19ff6779d024a800e3ea90126d0c050e86f71fd22cd23d1a306c784cef0f82c45e3ca

Author: achow101

src/test/fuzz/addrman.cpp

@@ -300,12 +300,20 @@ FUZZ_TARGET_INIT(addrman, initialize_addrman)
             });
     }
     const AddrMan& const_addr_man{addr_man};
+    std::optional<Network> network;
+    if (fuzzed_data_provider.ConsumeBool()) {
+        network = fuzzed_data_provider.PickValueInArray(ALL_NETWORKS);
+    }
     (void)const_addr_man.GetAddr(
         /*max_addresses=*/fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096),
         /*max_pct=*/fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096),
-        /*network=*/std::nullopt);
-    (void)const_addr_man.Select(fuzzed_data_provider.ConsumeBool());
-    (void)const_addr_man.Size();
+        network);
+    (void)const_addr_man.Select(fuzzed_data_provider.ConsumeBool(), network);
+    std::optional<bool> in_new;
+    if (fuzzed_data_provider.ConsumeBool()) {
+        in_new = fuzzed_data_provider.ConsumeBool();
+    }
+    (void)const_addr_man.Size(network, in_new);
     CDataStream data_stream(SER_NETWORK, PROTOCOL_VERSION);
     data_stream << const_addr_man;
 }