[release-branch.go1.24] crypto/tls: allow P-521 in FIPS 140-3 mode and Go+BoringCrypto
Partially reverts CL 587296, restoring the Go+BoringCrypto 1.23 behavior
in terms of supported curves.
Updates #71757
Fixes #72823
Change-Id: I6a6a465651a8407056fd0fae091d10a945b37997
Reviewed-on: https://go-review.googlesource.com/c/go/+/657135
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Roland Shoemaker <roland@golang.org> Reviewed-by: Daniel McCarney <daniel@binaryparadox.net> Reviewed-by: David Chase <drchase@google.com>