chore: move pnpm overrides from package.json to pnpm-workspace.yaml

[alexvy86]

Description

pnpm v10 supports overrides natively in pnpm-workspace.yaml, which is their canonical location going forward. This moves all pnpm.overrides entries and their associated comment arrays from package.json to the corresponding pnpm-workspace.yaml across all 14 workspaces.

• YAML comments replace the JSON comment arrays (comments, commentsOverrides, overrideComments, overridesComments) so override documentation is preserved inline next to each override
• Where onlyBuiltDependencies was already duplicated between package.json and pnpm-workspace.yaml, the package.json copy is removed since the yaml is the authoritative source
• Each workspace was independently validated with pnpm install --frozen-lockfile — all no-ops, no lockfile changes

28 files changed across 14 workspaces (14 package.json + 14 pnpm-workspace.yaml), 298 override entries moved total.

Reviewer Guidance

The review process is outlined on this wiki page.

This is a pure config migration — no code changes. The best way to verify is to confirm pnpm install --frozen-lockfile is a no-op in each workspace after the change.

[alexvy86]

I'd like to move forward with this to get better support for comments for overrides, but right now Syncpack doesn't support looking at versions in pnpm-workspace.yaml, so we would be losing that bit of validation, so it's not a trivial trade-off.

Issues tracking this or related functionality:

• feat: support overrides and catalogs in pnpm-workspace.yaml JamieMason/syncpack#304
• feat(version): try to support the query language within pnpm.overrides JamieMason/syncpack#231

[github-actions]

🔗 No broken links found! ✅

Your attention to detail is admirable.

linkcheck output

> fluid-framework-docs-site@0.0.0 ci:check-links /home/runner/work/FluidFramework/FluidFramework/docs
> start-server-and-test "npm run serve -- --no-open" 3000 check-links

1: starting server using command "npm run serve -- --no-open"
and when url "[ 'http://127.0.0.1:3000' ]" is responding with HTTP status code 200
running tests using command "npm run check-links"


> fluid-framework-docs-site@0.0.0 serve
> docusaurus serve --no-open

[SUCCESS] Serving "build" directory at: http://localhost:3000/

> fluid-framework-docs-site@0.0.0 check-links
> linkcheck http://localhost:3000 --skip-file skipped-urls.txt

Crawling...

Stats:
  279037 links
    1880 destination URLs
    2126 URLs ignored
       0 warnings
       0 errors