fix(common): accept POST requests as JSON by default again

[ardatan]

This PR reverts the breaking change introduced in 2.8.0(minor release)

[changeset-bot]

🦋 Changeset detected

Latest commit: 70d8f92

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

This PR includes changesets to release 5 packages

Name	Type
@graphql-yoga/common	Patch
cloudflare-advanced	Patch
cloudflare	Patch
service-worker	Patch
sveltekit	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[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-yoga/common	2.12.8-alpha-20220823123003-08c4605c	npm ↗︎ unpkg ↗︎
graphql-yoga	2.13.9-alpha-20220823123003-08c4605c	npm ↗︎ unpkg ↗︎
@graphql-yoga/node	2.13.9-alpha-20220823123003-08c4605c	npm ↗︎ unpkg ↗︎
@graphql-yoga/render-graphiql	2.13.8-alpha-20220823123003-08c4605c	npm ↗︎ unpkg ↗︎

[github-actions]

✅ Benchmark Results

     ✓ no_errors
     ✓ expected_result

     checks.........................: 100.00% ✓ 220724      ✗ 0     
     data_received..................: 29 MB   979 kB/s
     data_sent......................: 13 MB   423 kB/s
     http_req_blocked...............: avg=1.13µs   min=700ns    med=1µs      max=3.18ms   p(90)=1.4µs    p(95)=1.7µs   
     http_req_connecting............: avg=7ns      min=0s       med=0s       max=782.59µs p(90)=0s       p(95)=0s      
   ✓ http_req_duration..............: avg=202.99µs min=131.19µs med=181.39µs max=18.29ms  p(90)=228.79µs p(95)=256.69µs
       { expected_response:true }...: avg=202.99µs min=131.19µs med=181.39µs max=18.29ms  p(90)=228.79µs p(95)=256.69µs
     http_req_failed................: 0.00%   ✓ 0           ✗ 110362
     http_req_receiving.............: avg=17.87µs  min=10.2µs   med=16.59µs  max=6.29ms   p(90)=21.39µs  p(95)=25.39µs 
     http_req_sending...............: avg=5.87µs   min=3.89µs   med=4.59µs   max=4.16ms   p(90)=6.8µs    p(95)=10.2µs  
     http_req_tls_handshaking.......: avg=0s       min=0s       med=0s       max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=179.25µs min=115.49µs med=159.69µs max=18.2ms   p(90)=200.79µs p(95)=225.29µs
     http_reqs......................: 110362  3678.580571/s
     iteration_duration.............: avg=266.92µs min=184.99µs med=242.39µs max=19.42ms  p(90)=303.59µs p(95)=336.69µs
     iterations.....................: 110362  3678.580571/s
     vus............................: 1       min=1         max=1   
     vus_max........................: 1       min=1         max=1   

[n1ru4l]

Nedd to resolve the lockfile issues