RUM-10363: Replace System static calls with TimeProvider

[kikoveiga]

What does this PR do?

• Replaces all System.currentTimeMillis() and System.nanoTime() calls with TimeProvider interface calls.
• Improves and optimizes some tests by replacing Thread.sleep calls with fake timestamps using a mockTimeProvider.

Motivation

• Static calls are not mockable. Using an interface is better for injecting mock implementations and general testability.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 88.55721% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.23%. Comparing base (f786365) to head (8db5d89).

Files with missing lines	Patch %	Lines
...adog/android/internal/profiler/DDExecutionTimer.kt	0.00%	3 Missing ⚠️
...ava/com/datadog/trace/util/AgentTaskScheduler.java	0.00%	3 Missing ⚠️
...tadog/android/internal/profiler/GlobalBenchmark.kt	0.00%	2 Missing ⚠️
.../com/datadog/android/internal/time/TimeProvider.kt	0.00%	2 Missing ⚠️
...dog/android/rum/resource/RumResourceInputStream.kt	75.00%	0 Missing and 2 partials ⚠️
...nternal/recorder/listener/WindowsOnDrawListener.kt	0.00%	2 Missing ⚠️
...ace/core/scopemanager/ContinuableScopeManager.java	0.00%	2 Missing ⚠️
...n/com/datadog/android/core/internal/CoreFeature.kt	87.50%	1 Missing ⚠️
.../android/core/internal/logger/SdkInternalLogger.kt	50.00%	0 Missing and 1 partial ⚠️
...e/internal/thread/ObservableLinkedBlockingQueue.kt	66.67%	1 Missing ⚠️
... and 4 more

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3011      +/-   ##
===========================================
+ Coverage    71.17%   71.23%   +0.06%     
===========================================
  Files          859      860       +1     
  Lines        31444    31512      +68     
  Branches      5302     5304       +2     
===========================================
+ Hits         22378    22446      +68     
- Misses        7555     7565      +10     
+ Partials      1511     1501      -10     

Files with missing lines	Coverage Δ
.../com/datadog/android/api/feature/FeatureSdkCore.kt	33.33% <ø> (ø)
...n/com/datadog/android/core/internal/DatadogCore.kt	78.26% <100.00%> (+0.07%)	⬆️
...tadog/android/core/internal/NoOpInternalSdkCore.kt	9.00% <100.00%> (+0.92%)	⬆️
...in/com/datadog/android/core/internal/SdkFeature.kt	90.00% <100.00%> (+0.09%)	⬆️
...d/core/internal/data/upload/RotatingDnsResolver.kt	92.31% <100.00%> (+0.64%)	⬆️
...id/core/internal/metrics/BatchMetricsDispatcher.kt	94.59% <100.00%> (ø)
...oid/core/internal/metrics/MethodCalledTelemetry.kt	100.00% <100.00%> (ø)
...sistence/file/advanced/ConsentAwareFileMigrator.kt	80.85% <100.00%> (-0.54%)	⬇️
...rsistence/file/advanced/FeatureFileOrchestrator.kt	100.00% <100.00%> (ø)
...stence/file/advanced/MoveDataMigrationOperation.kt	100.00% <100.00%> (ø)
... and 58 more

... and 31 files with indirect coverage changes

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[datadog-official]

🎯 Code Coverage
• Patch Coverage: 100.00%
• Total Coverage: 71.34% (-0.00%)

View detailed report

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