fix: handle overlapping fields correctly across subschemas

[ardatan]

Read the changeset for the description.
This PR fixes the validation issues within no-entity Federation example

[changeset-bot]

🦋 Changeset detected

Latest commit: 0be344e

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

This PR includes changesets to release 4 packages

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

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[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	10.0.5-alpha-20240425165952-0be344e2ffe5fcda1f8884271e2843f35a633a93	npm ↗︎ unpkg ↗︎
@graphql-tools/federation	1.1.28-alpha-20240425165952-0be344e2ffe5fcda1f8884271e2843f35a633a93	npm ↗︎ unpkg ↗︎
@graphql-tools/stitch	9.2.0-alpha-20240425165952-0be344e2ffe5fcda1f8884271e2843f35a633a93	npm ↗︎ unpkg ↗︎

[github-actions]

✅ Benchmark Results

     ✓ no_errors
     ✓ expected_result

     checks.........................: 100.00% ✓ 336       ✗ 0  
     data_received..................: 39 MB   3.9 MB/s
     data_sent......................: 144 kB  14 kB/s
     http_req_blocked...............: avg=3.96µs   min=2.03µs   med=2.57µs   max=160µs    p(90)=3.96µs   p(95)=4.38µs  
     http_req_connecting............: avg=642ns    min=0s       med=0s       max=107.9µs  p(90)=0s       p(95)=0s      
     http_req_duration..............: avg=55.19ms  min=47.25ms  med=50.72ms  max=177.28ms p(90)=71.13ms  p(95)=86.01ms 
       { expected_response:true }...: avg=55.19ms  min=47.25ms  med=50.72ms  max=177.28ms p(90)=71.13ms  p(95)=86.01ms 
     http_req_failed................: 0.00%   ✓ 0         ✗ 168
     http_req_receiving.............: avg=135.59µs min=112.01µs med=129.97µs max=277.48µs p(90)=157.29µs p(95)=162.61µs
     http_req_sending...............: avg=25.51µs  min=17.65µs  med=24.75µs  max=59.69µs  p(90)=31.78µs  p(95)=34.82µs 
     http_req_tls_handshaking.......: avg=0s       min=0s       med=0s       max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=55.03ms  min=47.1ms   med=50.56ms  max=176.95ms p(90)=70.95ms  p(95)=85.84ms 
     http_reqs......................: 168     16.733788/s
     iteration_duration.............: avg=59.74ms  min=51.04ms  med=55ms     max=182.6ms  p(90)=75.31ms  p(95)=89.9ms  
     iterations.....................: 168     16.733788/s
     vus............................: 1       min=1       max=1
     vus_max........................: 1       min=1       max=1

[github-actions]

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