legacy spkm: Move CanProvide to LegacyDataSPKM

This function will be needed in migration

Author: achow101

src/wallet/scriptpubkeyman.cpp

@@ -591,7 +591,7 @@ std::unique_ptr<SigningProvider> LegacyDataSPKM::GetSolvingProvider(const CScrip
     return std::make_unique<LegacySigningProvider>(*this);
 }
 
-bool LegacyScriptPubKeyMan::CanProvide(const CScript& script, SignatureData& sigdata)
+bool LegacyDataSPKM::CanProvide(const CScript& script, SignatureData& sigdata)
 {
     IsMineResult ismine = IsMineInner(*this, script, IsMineSigVersion::TOP, /* recurse_scripthash= */ false);
     if (ismine == IsMineResult::SPENDABLE || ismine == IsMineResult::WATCH_ONLY) {

src/wallet/scriptpubkeyman.h

@@ -318,6 +318,7 @@ class LegacyDataSPKM : public ScriptPubKeyMan, public FillableSigningProvider
     uint256 GetID() const override { return uint256::ONE; }
     // TODO: Remove IsMine when deleting LegacyScriptPubKeyMan
     isminetype IsMine(const CScript& script) const override;
+    bool CanProvide(const CScript& script, SignatureData& sigdata) override;
 
     // FillableSigningProvider overrides
     bool HaveKey(const CKeyID &address) const override;
@@ -486,8 +487,6 @@ class LegacyScriptPubKeyMan : public LegacyDataSPKM
 
     bool CanGetAddresses(bool internal = false) const override;
 
-    bool CanProvide(const CScript& script, SignatureData& sigdata) override;
-
     bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, bilingual_str>& input_errors) const override;
     SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const override;
     std::optional<common::PSBTError> FillPSBT(PartiallySignedTransaction& psbt, const PrecomputedTransactionData& txdata, int sighash_type = SIGHASH_DEFAULT, bool sign = true, bool bip32derivs = false, int* n_signed = nullptr, bool finalize = true) const override;