Federation: handle shared root fields in optimal way

[ardatan]

If two different subschemas have the root field, use the same field to resolve missing fields instead of applying a type merging in advance

See the changesets for the other required changes

[changeset-bot]

🦋 Changeset detected

Latest commit: 302ba50

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
@graphql-tools/delegate	Patch
@graphql-tools/utils	Patch
@graphql-tools/stitch	Patch
@graphql-tools/federation	Patch
federation-benchmark	Patch

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[github-actions]

✅ Benchmark Results

     ✓ no_errors
     ✓ expected_result

     checks.........................: 100.00% ✓ 300       ✗ 0  
     data_received..................: 35 MB   3.5 MB/s
     data_sent......................: 128 kB  13 kB/s
     http_req_blocked...............: avg=5.02µs  min=2.33µs   med=3.01µs   max=234.48µs p(90)=4.58µs   p(95)=5.18µs  
     http_req_connecting............: avg=1.1µs   min=0s       med=0s       max=165.63µs p(90)=0s       p(95)=0s      
     http_req_duration..............: avg=62.58ms min=51.35ms  med=57.95ms  max=193.3ms  p(90)=75.35ms  p(95)=93.58ms 
       { expected_response:true }...: avg=62.58ms min=51.35ms  med=57.95ms  max=193.3ms  p(90)=75.35ms  p(95)=93.58ms 
     http_req_failed................: 0.00%   ✓ 0         ✗ 150
     http_req_receiving.............: avg=150.3µs min=116.93µs med=142.36µs max=414.22µs p(90)=166.05µs p(95)=216.74µs
     http_req_sending...............: avg=28.46µs min=18.35µs  med=26.07µs  max=134.98µs p(90)=36.49µs  p(95)=39.86µs 
     http_req_tls_handshaking.......: avg=0s      min=0s       med=0s       max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=62.4ms  min=51.19ms  med=57.79ms  max=192.75ms p(90)=75.19ms  p(95)=93.41ms 
     http_reqs......................: 150     14.899325/s
     iteration_duration.............: avg=67.09ms min=55.61ms  med=62.46ms  max=200.21ms p(90)=81.55ms  p(95)=99.21ms 
     iterations.....................: 150     14.899325/s
     vus............................: 1       min=1       max=1
     vus_max........................: 1       min=1       max=1

[github-actions]

🚀 Snapshot Release (alpha)

The latest changes of this PR are available as alpha on npm (based on the declared changesets):

Package	Version	Info
@graphql-tools/delegate	10.0.11-alpha-20240517135643-302ba506c04c6e74f9caff133b380c5daa765d8f	npm ↗︎ unpkg ↗︎
@graphql-tools/federation	1.1.36-alpha-20240517135643-302ba506c04c6e74f9caff133b380c5daa765d8f	npm ↗︎ unpkg ↗︎
@graphql-tools/stitch	9.2.9-alpha-20240517135643-302ba506c04c6e74f9caff133b380c5daa765d8f	npm ↗︎ unpkg ↗︎
@graphql-tools/utils	10.2.1-alpha-20240517135643-302ba506c04c6e74f9caff133b380c5daa765d8f	npm ↗︎ unpkg ↗︎

[github-actions]

💻 Website Preview

The latest changes are available as preview in: https://0eb0ee46.graphql-tools.pages.dev