Fix test name resolving logic

[cptartur]

Compiler's collect_tests adds whole paths in the filesystem to test names that are defined inline with the implementation.

e.g.
/abs/path/to/file/src::test_fib
instead of just
src::test_fib

In #1999 basic handling for this was added by just stripping the path from the name.

We should introduce the required changes to test collecting so paths are not included in the first place and remove the stripping logic.

There's a high chance this is related to #2092, so we should first resolve #2092 before starting this issue.

[MaksymilianDemitraszek]

@cptartur Can you provide some explanation here please 🥺

[cptartur]

@cptartur Can you provide some explanation here please 🥺

Working on it

[cptartur]

Blocked by #2092

[cptartur]

No longer blocked