wallet: add IsTxAssumed() to WalletTxStatus

Determine if a given transaction belongs to a block that is assumed to be valid pending background validation.

Add this information to WalletTxStatus.

Github-Pull: #28616
Rebased-From: a6c53bb24436ecc1ae717b032c0cccdd704044eb

src/interfaces/wallet.h

@@ -426,6 +426,8 @@ struct WalletTxStatus
     bool is_abandoned;
     bool is_coinbase;
     bool is_in_main_chain;
+    // The block containing this transaction is assumed valid
+    bool is_assumed;
 };
 
 //! Wallet transaction output.

src/wallet/interfaces.cpp

@@ -104,6 +104,7 @@ WalletTxStatus MakeWalletTxStatus(const CWallet& wallet, const CWalletTx& wtx)
     result.is_abandoned = wtx.isAbandoned();
     result.is_coinbase = wtx.IsCoinBase();
     result.is_in_main_chain = wtx.isConfirmed();
+    result.is_assumed = wallet.IsTxAssumed(wtx);
     return result;
 }
 

src/wallet/wallet.cpp

@@ -3473,6 +3473,18 @@ bool CWallet::IsTxImmatureCoinBase(const CWalletTx& wtx) const
     return GetTxBlocksToMaturity(wtx) > 0;
 }
 
+bool CWallet::IsTxAssumed(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet)
+{
+    AssertLockHeld(cs_wallet);
+    if (GetBackgroundValidationHeight() == -1) return false;
+    if (auto* conf = wtx.state<TxStateConfirmed>()) {
+        int height{conf->confirmed_block_height};
+        return height > GetBackgroundValidationHeight();
+    }
+    return false;
+}
+
+
 bool CWallet::IsCrypted() const
 {
     return HasEncryptionKeys();

src/wallet/wallet.h

@@ -525,6 +525,7 @@ public:
      * referenced in transaction, and might cause assert failures.
      */
     int GetTxDepthInMainChain(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
+    bool IsTxAssumed(const CWalletTx& wtx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
     /**
      * @return number of blocks to maturity for this transaction: