RUM-3523: Report all threads for non-fatal ANRs

[0xnm]

What does this PR do?

This PR adds reporting of all threads information for non-fatal ANRs, threads are reported in the same manner as it was done before for crashes (meaning name, state, stacktrace will be reported).

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)

[mariusc83]

Just some not blocking comments for me. All seems ok there.

[codecov-commenter]

Codecov Report

Merging #1912 (1cbed8f) into develop (f46eb76) will increase coverage by 0.01%.
Report is 6 commits behind head on develop.
The diff coverage is 78.12%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1912      +/-   ##
===========================================
+ Coverage    83.38%   83.39%   +0.01%     
===========================================
  Files          477      477              
  Lines        16922    16985      +63     
  Branches      2514     2524      +10     
===========================================
+ Hits         14109    14164      +55     
- Misses        2120     2126       +6     
- Partials       693      695       +2     

Files	Coverage Δ
...m/datadog/android/core/internal/utils/ThreadExt.kt	62.50% <100.00%> (ø)
...in/kotlin/com/datadog/android/rum/RumAttributes.kt	0.00% <ø> (ø)
.../android/rum/internal/monitor/DatadogRumMonitor.kt	84.62% <100.00%> (+0.10%)	⬆️
...og/android/rum/internal/anr/ANRDetectorRunnable.kt	85.19% <74.07%> (-8.15%)	⬇️

... and 25 files with indirect coverage changes