Fix progress eval test randomly failing

[eddiemundo]

Fixes #2578.

Took way too long to find for how simple it was. The issue was that getCodeLenses was occasionally eating progress create messages, which caused any further messages with the same progress tokens to fail.

The implemented fix is to expect progress messages up to the point of the code lens response, do whatever we need the code lens response for, then pass the currently active progress tokens to the final expect progress messages function finishing up the expectations.

The other progress tests should be fine since they don't eat messages.

[pepeiborra]

Awesome! The effort invested in fixing these subtle flaky tests often goes unnoticed so please accept my unlimited gratitude.