[TA] Better support for unexpected JUnit XML report types.

[rohan-at-sentry]

This is basically an epic that containerizes work around different issues wrt Junit XML reports not being picked up.

Figma: https://www.figma.com/design/VcshAnu3Db6tzx0GpgjW52/GH-2631?node-id=1-2

[rohan-at-sentry]

Think about how we want to store this within the context of larger db improvements as part of the TA performance work