Revert monitor-based tracing and restore platform-based tracing adapters

Revert monitor-based tracing and restore platform-based tracing adapters: a task in bird-critic-1.5-full-300 (Harbor dataset). graphql-ruby is a pure Ruby gem providing GraphQL execution with pluggable tracing. This task reverts PR 5270 (the monitor-based tracing overhaul) to restore the original…

The task

graphql-ruby is a pure Ruby gem providing GraphQL execution with pluggable tracing. This task reverts PR #5270 (the monitor-based tracing overhaul) to restore the original `platform_*` method-based tracing adapters. `DataDogTrace`, `NewRelicTrace`, `SentryTrace`, and `NotificationsTrace` return to their pre-#5270…

Part of kochsnow/bird-critic-1.5-full-300.