internal/ethapi: merge CallArgs and SendTxArgs (#22718)

There are two transaction parameter structures defined in
the codebase, although for different purposes. But most of
the parameters are shared. So it's nice to reduce the code
duplication by merging them together.

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

graphql/graphql.go

@@ -862,7 +862,7 @@ func (c *CallResult) Status() Long {
 }
 
 func (b *Block) Call(ctx context.Context, args struct {
-	Data ethapi.CallArgs
+	Data ethapi.TransactionArgs
 }) (*CallResult, error) {
 	if b.numberOrHash == nil {
 		_, err := b.resolve(ctx)
@@ -887,7 +887,7 @@ func (b *Block) Call(ctx context.Context, args struct {
 }
 
 func (b *Block) EstimateGas(ctx context.Context, args struct {
-	Data ethapi.CallArgs
+	Data ethapi.TransactionArgs
 }) (Long, error) {
 	if b.numberOrHash == nil {
 		_, err := b.resolveHeader(ctx)
@@ -937,7 +937,7 @@ func (p *Pending) Account(ctx context.Context, args struct {
 }
 
 func (p *Pending) Call(ctx context.Context, args struct {
-	Data ethapi.CallArgs
+	Data ethapi.TransactionArgs
 }) (*CallResult, error) {
 	pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
 	result, err := ethapi.DoCall(ctx, p.backend, args.Data, pendingBlockNr, nil, vm.Config{}, 5*time.Second, p.backend.RPCGasCap())
@@ -957,7 +957,7 @@ func (p *Pending) Call(ctx context.Context, args struct {
 }
 
 func (p *Pending) EstimateGas(ctx context.Context, args struct {
-	Data ethapi.CallArgs
+	Data ethapi.TransactionArgs
 }) (Long, error) {
 	pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber)
 	gas, err := ethapi.DoEstimateGas(ctx, p.backend, args.Data, pendingBlockNr, p.backend.RPCGasCap())