Speed up DemoUmamiProfileTest

Problem/Motivation

This takes 3+ minutes on gitlab ci and we can probably get it down to less than half that by combining test methods.

Steps to reproduce

On my local dev environment:

Before:

Time: 01:18.749, Memory: 10.00 MB

OK (3 tests, 415 assertions)

After:

Time: 00:30.057, Memory: 10.00 MB

OK (1 test, 426 assertions)

Proposed resolution

Remaining tasks

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet