RPC: only enforce dust rules on priority when standardness active

src/rpc/mining.cpp

@@ -496,7 +496,7 @@ static RPCHelpMan prioritisetransaction()
 
     // Non-0 fee dust transactions are not allowed for entry, and modification not allowed afterwards
     const auto& tx = mempool.get(hash);
-    if (tx && !GetDust(*tx, mempool.m_opts.dust_relay_feerate).empty()) {
+    if (mempool.m_opts.require_standard && tx && !GetDust(*tx, mempool.m_opts.dust_relay_feerate).empty()) {
         throw JSONRPCError(RPC_INVALID_PARAMETER, "Priority is not supported for transactions with dust outputs.");
     }