cmd/dist: enable misc/cgo/* tests on android/iOS

[hyangah]

many of cgo tests still remain disabled on android/ios, which prevents from detecting bugs early.
See grep -r android src/cmd/dist/test.go
Re-enable them.

[gopherbot]

CL https://golang.org/cl/23634 mentions this issue.

[gopherbot]

CL https://golang.org/cl/23635 mentions this issue.

[gopherbot]

Change https://golang.org/cl/163726 mentions this issue: misc/cgo: skip cgotest.TestCrossPackageTests on iOS and set PWD

[aclements]

I recently discovered that some cgo tests appear to be enabled for Android in cmd/dist, but actually do nothing. For example, misc/cgo/stdio and misc/cgo/life are run on Android, but then immediately t.Skip.

[gopherbot]

Change https://go.dev/cl/489196 mentions this issue: misc/cgo: enable more cgo tests on Android

[gopherbot]

Change https://go.dev/cl/489495 mentions this issue: internal/testenv: abstract exec wrapper command into testenv

[gopherbot]

Change https://go.dev/cl/489496 mentions this issue: misc/cgo/errors: enable on Android

[gopherbot]

Change https://go.dev/cl/488975 mentions this issue: misc/android: improve exit code workaround

[gopherbot]

Change https://go.dev/cl/489437 mentions this issue: cmd/dist: enable more cgo tests on iOS