`*Client.NewStream()` does not apply metadata to `Request{}`

[amurchick]

*Client.Call() apply metadata to Request{}:

ttrpc/client.go

Lines 162 to 164 in faba589

	if metadata, ok := GetMetadata(ctx); ok {
	metadata.setRequest(creq)
	}

But *Client.NewStream() does not have this block - so metadata not applyed.

Please add this block to *Client.NewStream().
Thank you!