accounts/abi/bind: fix bounded contracts and sim backend for 1559 (#23038)

* accounts/abi/bind: fix bounded contracts and sim backend for 1559

* accounts/abi/bind, ethclient: don't rely on chain config for gas prices

* all: enable London for all internal tests

* les: get receipt type info in les tests

* les: fix weird test

Co-authored-by: Martin Holst Swende <martin@swende.se>

core/chain_makers.go

@@ -130,6 +130,11 @@ func (b *BlockGen) Number() *big.Int {
 	return new(big.Int).Set(b.header.Number)
 }
 
+// BaseFee returns the EIP-1559 base fee of the block being generated.
+func (b *BlockGen) BaseFee() *big.Int {
+	return new(big.Int).Set(b.header.BaseFee)
+}
+
 // AddUncheckedReceipt forcefully adds a receipts to the block without a
 // backing transaction.
 //