Improve SSI

[lloeki]

What does this PR do?

General improvements to the current SSI injector bootstrap implementation

Motivation:

Some things are not quite covered.

Change log entry

Additional Notes:

How to test the change?

It's a bit hard right now, either we have small granularity CI but a lot of environmental invasion (rspec) or we have isolation but coarse granularity (vaccine). Working on it.

#4366

[github-actions]

👋 Hey @lloeki, please fill "Change log entry" section in the pull request description.

If changes need to be present in CHANGELOG.md you can state it this way

**Change log entry**

Yes. A brief summary to be placed into the CHANGELOG.md

(possible answers Yes/Yep/Yeah)

Or you can opt out like that

**Change log entry**

None.

(possible answers No/Nope/None)

^{Visited at: 2025-02-12 10:56:12 UTC}

[datadog-datadog-prod-us1]

Datadog Report

Branch report: lloeki/ssi
Commit report: 31c757b
Test service: dd-trace-rb

✅ 0 Failed, 22083 Passed, 1476 Skipped, 5m 19.71s Total Time

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.77%. Comparing base (a444023) to head (31c757b).
Report is 71 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4366      +/-   ##
==========================================
+ Coverage   97.73%   97.77%   +0.04%     
==========================================
  Files        1368     1372       +4     
  Lines       83014    84650    +1636     
  Branches     4221     4400     +179     
==========================================
+ Hits        81134    82770    +1636     
  Misses       1880     1880              

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[pr-commenter]

Benchmarks

Benchmark execution time: 2025-02-12 14:20:36

Comparing candidate commit b859659 in PR branch lloeki/ssi with baseline commit a444023 in branch master.

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