ci: consider not running `nogo` as part of builds in certain jobs (roachtests, nightlies, etc.)

Generally, CI jobs and automation (including roachtests, nightlies, etc.) build with `--config ci` which implies `--config lintonbuild`. This can slow down the build a fair amount and for many jobs (especially nightlies or other post-merge jobs), this extra validation is totally unnecessary.

It's unclear right now how to fix this, but one option we have is decoupling `lintonbuild` from `--config ci`. These days, `--run_validations` (which is what is used for `nogo` in `rules_go`) defaults to `true`, so omitting the command-line flag by itself will not be sufficient. We will instead have to add `--norun_validations` wherever we don't want `nogo` running.

Jira issue: CRDB-45172