[8.0] fix: check for the -l pilot option

[atsareg]

The check for the -l option was spotting also cases like -Q nordugrid-torque-long which is wrong.

BEGINRELEASENOTES

*WorkloadManagement FIX: PilotWrapper - check for the presence of the -l pilot option

ENDRELEASENOTES

[DIRACGridBot]

Sweep summary

Sweep ran in https://github.com/DIRACGrid/DIRAC/actions/runs/9713352253

Successful:

• integration