ci: build CommonJS test-version-utils for perf runs

[daesunp]

Description

Fixes the Performance benchmarks pipeline (perf_e2e_local, perf_e2e_frs, perf_e2e_odsp),
which has failed continuously on main since #27265 with:

Error: Unable to read/parse .../test-end-to-end-tests/.mocharc.cjs:
Error: Cannot find module './dist/compatOptions.js'

Root cause

The perf pipeline runs pnpm exec fluid-build --nolint --task build:test:esm --worker.
@fluid-private/test-version-utils/mocharc-common.cjs require()s its own ./dist/compatOptions.js (CommonJS) at mocha load time, but #27265 narrowed test-end-to-end-tests's build:test:esm override from "^tsc" (every ancestor's CJS build) to a single explicit ancestor, dropping the transitive CJS build of test-version-utils. The CJS artifact stopped being produced and mocha failed to load its config.

Fix

Add a one-time pre-build step in tools/pipelines/test-perf-benchmarks.yml that runs
fluid-build packages/test/test-version-utils --task compile before the main
build:test:esm step. This warms test-version-utils's dist/ so the runtime
require() from mocharc-common.cjs resolves.

Because the new step lives inside the ${{ each job in parameters.benchmarkJobs }}:
template, the single source-line addition applies to all 5 stages.

[github-actions]

Hi! Thank you for opening this PR. Want me to review it?

Based on the diff (12 lines, 1 files), I've queued these reviewers:

• Correctness — logic errors, race conditions, lifecycle issues
• Security — vulnerabilities, secret exposure, injection
• API Compatibility — breaking changes, release tags, type design
• Performance — algorithmic regressions, memory leaks
• Testing — coverage gaps, hollow tests

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[Copilot]

Pull request overview

This PR fixes the performance benchmark pipelines that run ESM-focused builds by ensuring @fluid-private/test-version-utils still produces the CommonJS artifact (dist/compatOptions.js) that its mocharc-common.cjs loads via require() at Mocha startup.

Changes:

• Adds a fluidBuild.tasks override so build:esnext depends on the package’s tsc (CommonJS) build.
• Documents the rationale in package.json to prevent future regressions when scoped ESM builds are used.

[jason-ha]

If the perf pipeline passed with this, then let's do it.

[daesunp]

/azp run Build - protocol-definitions,Build - test-tools,server-gitrest,server-gitssh,server-historian,server-routerlicious,Build - client packages,repo-policy-check

[daesunp]

/azp run Build - api-markdown-documenter,Build - benchmark-tool,Build - build-common,Build - build-tools,Build - common-utils,Build - eslint-config-fluid,Build - eslint-plugin-fluid

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[azure-pipelines]

Azure Pipelines could not run because the pipeline triggers exclude this branch/path.

[daesunp]

/azp run Performance benchmarks

[azure-pipelines]

No pipelines are associated with this pull request.