refactor: cleanup coroutine scopes

[stuebingerb]

Remove coroutineContext from execution context and use one with the provided dispatcher.

[codecov]

Codecov Report

❌ Patch coverage is 93.54839% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.66%. Comparing base (4d69cb5) to head (fb92944).

Files with missing lines	Patch %	Lines
...raphql/schema/execution/ParallelRequestExecutor.kt	93.33%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #500   +/-   ##
=======================================
  Coverage   83.66%   83.66%           
=======================================
  Files         152      152           
  Lines        4904     4905    +1     
  Branches      854      854           
=======================================
+ Hits         4103     4104    +1     
  Misses        499      499           
  Partials      302      302           

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[github-actions]

Bencher Report

Branch	refactor/better-coroutine-scope
Testbed	ubuntu-latest

🚨 1 Alert

Benchmark	Measure Units	View	Benchmark Result (Result Δ%)	Lower Boundary (Limit %)
com.apurebase.kgraphql.RequestCachingBenchmark.invalidRequest	Throughput operations / second (ops/s) x 1e3	📈 plot 🚷 threshold 🚨 alert (🔔)	33.59 ops/s x 1e3 (-83.88%) Baseline: 208.38 ops/s x 1e3	55.18 ops/s x 1e3 (164.27%)

Click to view all benchmark results

Benchmark	Latency	Benchmark Result milliseconds (ms) (Result Δ%)	Upper Boundary milliseconds (ms) (Limit %)	Throughput	Benchmark Result operations / second (ops/s) x 1e3 (Result Δ%)	Lower Boundary operations / second (ops/s) x 1e3 (Limit %)
com.apurebase.kgraphql.FunctionExecutionBenchmark.benchmarkFunctionExecution				📈 view plot 🚷 view threshold	6,088.69 ops/s x 1e3 (+0.79%) Baseline: 6,041.11 ops/s x 1e3	5,825.30 ops/s x 1e3 (95.67%)
com.apurebase.kgraphql.ParallelExecutionBenchmark.queryBenchmark	📈 view plot 🚷 view threshold	769.19 ms (-0.18%) Baseline: 770.60 ms	772.13 ms (99.62%)
com.apurebase.kgraphql.RequestCachingBenchmark.invalidRequest				📈 view plot 🚷 view threshold 🚨 view alert (🔔)	33.59 ops/s x 1e3 (-83.88%) Baseline: 208.38 ops/s x 1e3	55.18 ops/s x 1e3 (164.27%)
com.apurebase.kgraphql.RequestCachingBenchmark.largeRequest				📈 view plot 🚷 view threshold	8.18 ops/s x 1e3 (-2.82%) Baseline: 8.42 ops/s x 1e3	7.48 ops/s x 1e3 (91.45%)
com.apurebase.kgraphql.RequestCachingBenchmark.smallRequest				📈 view plot 🚷 view threshold	12.54 ops/s x 1e3 (-0.78%) Baseline: 12.64 ops/s x 1e3	11.42 ops/s x 1e3 (91.03%)
com.apurebase.kgraphql.SimpleExecutionOverheadBenchmark.benchmark				📈 view plot 🚷 view threshold	458.60 ops/s x 1e3 (-2.24%) Baseline: 469.12 ops/s x 1e3	452.52 ops/s x 1e3 (98.67%)

🐰 View full continuous benchmarking report in Bencher