4.x: Scheduler.toExecutorService(boolean) logic fix

[akarnokd]

The toExecutorService(boolean) lacked the implementation to really chose between the worker and the direct methods.

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.721 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMergeDelayErrorTest.java: 4.729
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMergeMaxConcurrentTest.java: 4.676
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMergeTest.java: 4.748
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMergeWithCompletableTest.java: 4.758
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMergeWithMaybeTest.java: 4.576
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMergeWithSingleTest.java: 4.562
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableObserveOnTest.java: 4.598
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureBufferStrategyTest.java: 4.953
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureBufferTest.java: 4.785
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureDropTest.java: 4.792
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureErrorTest.java: 4.996
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureLatestTest.java: 4.666
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureReduceTest.java: 4.759
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnBackpressureReduceWithTest.java: 4.623
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnErrorResumeNextViaFlowableTest.java: 4.669
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnErrorResumeNextViaFunctionTest.java: 4.769
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableOnErrorReturnTest.java: 4.677
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowablePublishFunctionTest.java: 4.640
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowablePublishMulticastTest.java: 4.717

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 98.78%. Comparing base (3824963) to head (ba74074).
⚠️ Report is 1 commits behind head on 4.x.

Files with missing lines	Patch %	Lines
...main/java/io/reactivex/rxjava4/core/Scheduler.java	0.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##                4.x    #8151      +/-   ##
============================================
- Coverage     98.79%   98.78%   -0.02%     
  Complexity     6880     6880              
============================================
  Files           769      769              
  Lines         48659    48659              
  Branches       6516     6516              
============================================
- Hits          48074    48066       -8     
- Misses          443      449       +6     
- Partials        142      144       +2     

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