x/build: add 1.23 and tip builders with GODEBUG=gotypesalias=1 for at least the x/tools repo

[findleyr]

See #68796 and #68797 for some background on missing test coverage with GODEBUG=gotypesalias=1.

Until x/tools has a go.mod file that says 1.23 (not until at least 1.24 is released), it will lack test coverage of GODEBUG=gotypesalias=1. @timothy-king had added go1.21 and go1.22 builders with GODEBUG=gotypesalias=1; we need them for 1.23 and tip as well.

@timothy-king @dmitshur would you mind adding these as well? CC @adonovan

[gabyhelp]

Related Issues and Documentation

• x/build: catch problems in x/ repos gated by module go directive version sooner #67791

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[dmitshur]

These builders were recently updated in CL 601177 to stop existing after 1.22 based on the idea that 1.23 and later already default to GODEBUG=gotypesalias=1. I'll refine that to keep them around for 1.23 and 1.24 as well.

[findleyr]

Thanks very much @dmitshur! Would it be possible to add the tip builder to the default presubmit tryset as well?

[gopherbot]

Change https://go.dev/cl/604335 mentions this issue: main.star: enable linux-amd64-typesalias postsubmit for Go 1.23 and tip

[gopherbot]

Change https://go.dev/cl/604336 mentions this issue: main.star: enable linux-amd64-typesalias presubmit for Go 1.23 and tip

[gopherbot]

Closed by merging CL 604336 (commit golang/build@8cb2bf7) to luci-config.

[gopherbot]

Change https://go.dev/cl/648695 mentions this issue: main.star: stop running typesalias builder beyond Go 1.24