[FIX] throw warning when no results are asked

[Remi-Gau]

fix #794

[codecov]

Codecov Report

Merging #795 (182e770) into main (efa12cd) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #795      +/-   ##
==========================================
- Coverage   77.92%   77.90%   -0.03%     
==========================================
  Files         217      217              
  Lines        5754     5747       -7     
==========================================
- Hits         4484     4477       -7     
  Misses       1270     1270              

Flag	Coverage Δ
matlab	77.90% <100.00%> (+0.12%)	⬆️
octave	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/workflows/stats/bidsResults.m	48.58% <100.00%> (+2.46%)	⬆️
src/infra/checkToolbox.m	80.00% <0.00%> (-20.00%)	⬇️
src/reports/copyFigures.m	87.50% <0.00%> (-12.50%)	⬇️
src/messages/printToScreen.m	84.21% <0.00%> (-5.27%)	⬇️
src/infra/getEnvInfo.m	69.11% <0.00%> (-1.48%)	⬇️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more