AO3-7471 Remove active_record_query_trace, replace w/native

[y7nieSEl5]

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Issue

https://otwarchive.atlassian.net/browse/AO3-7471

Purpose

Removes the overlapping query-source tracing mechanisms and relies on Rails' native verbose query logs.

• removes the active_record_query_trace dependency
• removes the gem-specific initializer
• removes the custom ActiveRecord::LogSubscriber extension
• keeps config.active_record.verbose_query_logs = true in development

Development query logs now contain one native ↳ file:line entry instead of duplicate source information or a multiline gem-generated stack trace.

Testing Instructions

1. Rebuild and start the development container:

docker compose up -d --build web

Confirm its dependencies are installed:

docker compose exec web bundle check

2. Trigger a database query:

docker compose exec web bin/rails runner 'User.first'

3. Inspect the development log:

docker compose exec web tail -n 30 log/development.log

Confirm query entries contain a single Rails-native ↳ file:line source and do not contain multiline active_record_query_trace call stacks or duplicate source lines.

Credit

y7nieSEl5, she/her