DEBUG-3573 Report state of dynamic instrumentation to telemetry

[p-datadog]

What does this PR do?
Adds the enabled status of dynamic instrumentation to telemetry app-started event

Motivation:
Reporting of DI status is required for DI UI to work correctly as well as for internal DI monitoring/troubleshooting tools

Change log entry
None

Additional Notes:

To make DI always reportable via telemetry I had to make its configuration defined on all Ruby runtimes including the ones where the product itself does not work (Ruby 2.5, JRuby). Additional loading test was added to verify ability to set DI configuration options on all runtimes; this test mirrors failures I've gotten on rails42 and rails50 system test configurations which use Ruby 2.5 once I started sending DI status to telemetry.

How to test the change?
Unit tests + system tests enabled in DataDog/system-tests#4656

[github-actions]

Thank you for updating Change log entry section 👏

^{Visited at: 2025-05-14 14:36:39 UTC}

[datadog-datadog-prod-us1]

Datadog Report

Branch report: telemetry-di
Commit report: 747a986
Test service: dd-trace-rb

✅ 0 Failed, 21241 Passed, 1374 Skipped, 3m 50.36s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-05-15 00:16:20

Comparing candidate commit 747a986 in PR branch telemetry-di with baseline commit 1764000 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 31 metrics, 2 unstable metrics.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.93939% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.77%. Comparing base (1764000) to head (747a986).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/datadog/di/boot.rb	90.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4647   +/-   ##
=======================================
  Coverage   97.77%   97.77%           
=======================================
  Files        1419     1422    +3     
  Lines       86623    86675   +52     
  Branches     4397     4403    +6     
=======================================
+ Hits        84693    84746   +53     
+ Misses       1930     1929    -1     

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[Strech]

👍🏼 much clearer