Use legacy apparent names for rules_go and gazelle

[fmeum]

When bazelisk is brought in as a Go dependency via gazelle's go_deps extension, it uses the repo mapping of the gazelle module to resolve loads. Since gazelle uses the legacy apparent names bazel_gazelle and io_bazel_rules_go for the gazelle and rules_go modules, the same is required for any Bazel module that is also a Go module (until gazelle gains the ability to fix load labels).

This regressed in 4448ad1.

[fmeum]

@fweikert @meteorcloudy