Add two tests that verify that MapOf sets the map NeedsKeyUpdate and
HashMightPanic flags in the created map. Missing these flags would cause
correctness issues not otherwise caught in the reflect tests.
For #54766.
Change-Id: Icd5f117e0794e7b4d1b70fa94e5afbe97c4543e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/594656 Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com>