4.x: Observable.combineLatest API reduction

[akarnokd]

Reduce API surface by introducing configuration record to various operators.

Observable

• combineLatest + combineLatestDelayError -> combineLatest + ObservableCombineLatestConfig
• combineLatestArray + combineLatestArrayDelayError -> combineLatestArray + ObservableCombineLatestConfig

Related: #8173

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.693 bits/char
Verdict: ✅ Mid-4 beauty detected (thoughtful human code!)

Changed files entropy:

.github/workflows/entropy-beauty-scan.yml: 4.693

✅ No secrets or suspicious high-entropy strings found.

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.34%. Comparing base (e99ea03) to head (c72d912).
⚠️ Report is 1 commits behind head on 4.x.

Additional details and impacted files

@@             Coverage Diff              @@
##                4.x    #8172      +/-   ##
============================================
- Coverage     98.35%   98.34%   -0.02%     
+ Complexity     6947     6946       -1     
============================================
  Files           781      782       +1     
  Lines         49054    49057       +3     
  Branches       6600     6599       -1     
============================================
- Hits          48249    48244       -5     
- Misses          618      625       +7     
- Partials        187      188       +1     

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[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.693 bits/char
Verdict: ✅ Mid-4 beauty detected (thoughtful human code!)

Changed files entropy:

.github/workflows/entropy-beauty-scan.yml: 4.693

✅ No secrets or suspicious high-entropy strings found.

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