CI: Add RTJO tests for Go and Ruby

[d10c]

Add new QL language test CI jobs next to the existing ones in this repo, using run-time join ordering (--dynamic-join-order-mode=all), to be triggered by adding the "Run: RTJO Language Tests" label.

[d10c]

Triggering by adding the "Run: RTJO Language Tests" label works; blocked getting the engine to pass the tests under RTJO.

[Copilot]

Pull Request Overview

This PR introduces new CI workflows to run language tests with run-time join ordering (RTJO) for both Ruby and Go. Key changes include:

• Adding a Ruby workflow (.github/workflows/ruby-qltest-rtjo.yml) to run QL tests with RTJO.
• Adding a Go workflow (.github/workflows/go-tests-rtjo.yml) to run tests with RTJO.
• Updating the Go test action (go/actions/test/action.yml) to accept a dynamic join order mode flag.

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
.github/workflows/ruby-qltest-rtjo.yml	New CI workflow for Ruby RTJO language tests.
.github/workflows/go-tests-rtjo.yml	New CI workflow for Go RTJO tests.
go/actions/test/action.yml	Updated action to pass dynamic join order mode to the Makefile.

Files not reviewed (1)

• go/Makefile: Language not supported

Comments suppressed due to low confidence (2)

.github/workflows/ruby-qltest-rtjo.yml:24

• The runner label 'ubuntu-latest-xl' is non-standard; please ensure this is intentional and that the intended runner is available.

runs-on: ubuntu-latest-xl

.github/workflows/go-tests-rtjo.yml:14

• The runner label 'ubuntu-latest-xl' is non-standard; please verify that this label correctly references a configured runner in your environment.

runs-on: ubuntu-latest-xl

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[alexet]

Because this is public it will get a nightly codeql so we need to wait until tomorrow before the fix to RTJO is available.