bug: sql metrics not being captured properly

[daniel-codecov]

The SQL metrics in worker currently don't track full-runtime, success and error at all because they fall out of the django commit in file:tasks/base.py.

Rework the context managers so that the db operations to capture those metrics actually get included in the django commit.

EG: full-runtime stopped getting captured sometime around March 7th 2024

[thomasrockhu-codecov]

@thomasrockhu-codecov to add Low and Platform labels