Merge bitcoin/bitcoin#25869: wallet: remove UNKNOWN type from OUTPUT_TYPES array

5b4fdbb wallet: remove UNKNOWN type from OUTPUT_TYPES array (furszy)

Pull request description:

  Fixing bitcoin/bitcoin#25734 (comment) ->  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50329

  The `OUTPUT_TYPES` array contain the known active output types only.
  And it's solely used to create/walk-through the active spkms.

  So, no need to add the `UNKNOWN` type here.

ACKs for top commit:
  achow101:
    ACK 5b4fdbb
  w0xlt:
    ACK bitcoin/bitcoin@5b4fdbb
  LarryRuane:
    ACK 5b4fdbb

Tree-SHA512: dee2dc362a1b0c777555e5ee4d355a3351340591d0096f74e8c3a25f374cb2d9aef26145977ff4dd0f8cc940da9464eb5541eb2895bc19f8cbd6bb6d292ab9a9

Author: achow101

src/outputtype.h

@@ -27,7 +27,6 @@ static constexpr auto OUTPUT_TYPES = std::array{
     OutputType::P2SH_SEGWIT,
     OutputType::BECH32,
     OutputType::BECH32M,
-    OutputType::UNKNOWN,
 };
 
 std::optional<OutputType> ParseOutputType(const std::string& str);

src/wallet/wallet.cpp

@@ -3446,7 +3446,6 @@ void CWallet::SetupDescriptorScriptPubKeyMans()
 
         for (bool internal : {false, true}) {
             for (OutputType t : OUTPUT_TYPES) {
-                if (t == OutputType::UNKNOWN) continue;
                 auto spk_manager = std::unique_ptr<DescriptorScriptPubKeyMan>(new DescriptorScriptPubKeyMan(*this));
                 if (IsCrypted()) {
                     if (IsLocked()) {