Launch TRR test suite GUI not in full screen

[jlenain]

Avoid launching the TRR test suite GUI in full screen, which could be tricky to exit in some remote sessions (VNC, remote servers, ...).

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 53.35%. Comparing base (6a50459) to head (bd8d8f8).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/nectarchain/trr_test_suite/gui.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #216      +/-   ##
==========================================
- Coverage   53.36%   53.35%   -0.02%     
==========================================
  Files          76       76              
  Lines        6234     6234              
==========================================
- Hits         3327     3326       -1     
- Misses       2907     2908       +1     

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