[rpc/node] check for high fee before ATMP in clients

Check absurd fee in BroadcastTransaction and RPC,
return TransactionError::MAX_FEE_EXCEEDED instead
of TxValidationResult::TX_NOT_STANDARD because this
is client preference, not a node-wide policy.

src/validation.cpp

@@ -730,8 +730,7 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
     if (!bypass_limits && !CheckFeeRate(nSize, nModifiedFees, state)) return false;
 
     if (nAbsurdFee && nFees > nAbsurdFee)
-        return state.Invalid(TxValidationResult::TX_NOT_STANDARD,
-                "absurdly-high-fee", strprintf("%d > %d", nFees, nAbsurdFee));
+        LogPrintf("Ignoring Absurdfee\n");
 
     const CTxMemPool::setEntries setIterConflicting = m_pool.GetIterSet(setConflicts);
     // Calculate in-mempool ancestors, up to a limit.