Stop running numba tests in object mode for coverage

[ricardoV94]

Description

With numba 0.61 coverage will work for lines that are seen during compilation: https://numba.readthedocs.io/en/stable/release/0.61.0-notes.html#added-compile-time-code-coverage

This means we may be able to stop running tests in object mode just for coverage purposes: https://github.com/pymc-devs/pytensor/blob/cc8c499272e9b3e7e3637e8b6eaca7fb35b20376/tests/link/numba/test_basic.py#L274-L279