reflect: let Value.Seq iterate integer conform to the spec
See CL 557596, according to the go specification,
the iterated variable type should
be the same as the iterated integer type.
For #66056
Change-Id: I96c87440328c2c50c40d76ecf2f222a331be1ce9
GitHub-Last-Rev:
8f80e401e5d7e092290d94e2bfcac89f3e04c2c5
GitHub-Pull-Request: golang/go#67269
Reviewed-on: https://go-review.googlesource.com/c/go/+/584516
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>