[release-branch.go1.14] time: use extended time format past end of zone transitions
This gives us better expected information for daylight savings time
transitions in year 2038 and beyond.
For #36654
For #42155
Change-Id: I5a39aed3c40b184e1d7bb7d6ce3aff5307c4c146
Reviewed-on: https://go-review.googlesource.com/c/go/+/215539
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
(cherry picked from commit
b71eafbcece175db33acfb205e9090ca99a8f984)
Reviewed-on: https://go-review.googlesource.com/c/go/+/264302
Trust: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>