chore(mongodb-schema): replace @mongodb-js/compass-test-server with an inline mochaTestServer COMPASS-11068

[nbbeeken]

Description

@mongodb-js/compass-test-server has been private for a while now making it no longer update on npm, this package is forever going to pull in an old version of that compass package which uses an old mongodb-runner version making it impossible to remove old "tar" and other such vuln packages from the tree.

This PR now makes mongodb-runner a direct dev dependency and copies the helper function it was using into this repo.

Open Questions

Checklist

• I have signed the Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)
• New tests and/or benchmarks are included
• Documentation is changed or added

[Copilot]

Pull request overview

This PR removes the private @mongodb-js/compass-test-server dependency from mongodb-schema tests by inlining the needed Mocha test-server helper and adding mongodb-runner as a direct dev dependency to avoid pulling outdated transitive packages.

Changes:

• Replaced @mongodb-js/compass-test-server usage with an inline mochaTestServer() helper built on mongodb-runner.
• Updated packages/mongodb-schema devDependencies to remove @mongodb-js/compass-test-server and add mongodb-runner.
• Updated the root lockfile to reflect the dependency tree changes.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/mongodb-schema/test/integration/generate-and-validate.test.ts	Inlines a Mocha-managed MongoDB standalone startup/teardown helper using mongodb-runner.
packages/mongodb-schema/package.json	Swaps dev dependency from @mongodb-js/compass-test-server to mongodb-runner.
package-lock.json	Removes @mongodb-js/compass-test-server entries and adds/updates mongodb-runner resolution.

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