fix: Map trilogy database adapter to mysql for Query Insights compatibility

[krismichalski]

Description

When using trilogy adapter in Rails app, Query Insights view in Sentry did not show any data.

The problem is that trilogy is not in the allowed system db name list:
https://github.com/getsentry/semantic-conventions/blob/main/docs/attributes-registry/db.md
despite being just a different MySQL adapter, and hence does not meet the criteria for span eligibility:
https://docs.sentry.io/product/insights/backend/queries/#span-eligibility

The simple fix is to just map trilogy to mysql for the db system name.

Current Behavior

No query data is displayed because trilogy is not recognized as a valid database system.

Expected Behavior

Query data from trilogy adapter should appear in Sentry's Query Insights view, similar to other MySQL adapters.

Alternative solution (how I tested it worked)

The same result can be achieved using before_send_transaction:

# Workaround: Map trilogy spans to mysql for Sentry compatibility
config.before_send_transaction = lambda do |event, _hint|
  event.spans.select { |span| span[:op].start_with?("db.") }.each do |span|
    span[:data]["db.system"] = "mysql" if span[:data]&.fetch("db.system", nil) == "trilogy"
  end
end

[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.35%. Comparing base (7d10c02) to head (8e87a7b).
⚠️ Report is 47 commits behind head on master.

Files with missing lines	Patch %	Lines
...b/sentry/rails/tracing/active_record_subscriber.rb	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2656      +/-   ##
==========================================
+ Coverage   90.13%   90.35%   +0.21%     
==========================================
  Files         132      141       +9     
  Lines        5301     5587     +286     
==========================================
+ Hits         4778     5048     +270     
- Misses        523      539      +16     

Components	Coverage Δ
sentry-ruby	97.27% <98.24%> (-0.02%)	⬇️
sentry-rails	55.30% <11.11%> (-0.20%)	⬇️
sentry-sidekiq	95.05% <100.00%> (ø)
sentry-resque	94.44% <ø> (ø)
sentry-delayed_job	94.68% <ø> (ø)
sentry-opentelemetry	96.81% <92.00%> (-2.50%)	⬇️

Files with missing lines	Coverage Δ
...b/sentry/rails/tracing/active_record_subscriber.rb	35.41% <0.00%> (-1.54%)	⬇️

... and 4 files with indirect coverage changes

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