crypto/tls: check if quic conn can send session ticket
On SendSessionTicket, returns nil if SessionTicketsDisabled is disabled in config.
Fixes #62032
Change-Id: Id0c89e2e6fb0805bbf108bb0cafdabdfbaf3897f
Reviewed-on: https://go-review.googlesource.com/c/go/+/528755 Reviewed-by: Roland Shoemaker <roland@golang.org> Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Mark Freeman <markfreeman@google.com>