Complement long tests with short tests for better coverage

A presentation of the daily tests is being implemented. It was decided to remove the MR pipeline tests from the long test vector tests to reduce overlap, but if we want to have a more complete picture perhaps the short test vector tests should still be included.

Currently, the long test includes these two test categories

• tests/codec_be_on_mr_nonselection/test_param_file.py::test_param_file_tests[ltv-*]
• tests/renderer/test_renderer.py

The short test vector tests adds the following tests:

• tests/codec_be_on_mr_nonselection/test_masa_enc_dec.py
• tests/codec_be_on_mr_nonselection/test_sba_bs_dec_plc.py
• tests/codec_be_on_mr_nonselection/test_sba_bs_enc.py

Perhaps we should add the latter three test categories to increase the coverage, even if they are run with the short test vectors.

Pinging @kiene, @pihlajakuja, @jiaquan.huo