feat(autoware_launch): set use_sim_time parameter equal to true when …

[pawellech1]

Description

In order to set global use_sim_time parameter value to True by default when the simulation is run the use_sim_time argument in the planning_simulator launch file was declared. Its value is set to be equal to the scenario_simulation parameter value.

Tests performed

I tested the system with the scenario simulator and global use_sim_time parameter is in fact changed.

Effects on system behavior

The use_sim_time global parameter value is set to True by default when the simulation is run.

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[maxime-clem]

This change prevents from using use_sim_time:=true outside of using the scenario_simulation.
Previously I would add the argument to my launch command ros2 launch ... use_sim_time:=true but this is no longer possible and I had to revert the changes of this PR.

[takayuki5168]

@xmfcx I also want to enable use_sim_time when using the simple planning simulator as Maxime-san mentioned above. Can you please fix it?

[xmfcx]

@takayuki5168 @maxime-clem alright, I'll revert it right away.