Fix PUT /active-response invalid command in performance test

[RamosFe]

Related issue
#5639

Description

When investigating the following Issue #5639, it was found that the error was caused by using a non-existing command in the request. When using one of the default commands (described in the following documentation), the issue persists when running the pipeline, but not when running it locally.

We should investigate the agent_simulator used in the tests and if It is needed to make changes to how it handles the active-response commands.

[juliamagan]

After talking to @fdalmaup, we don't think we should fix the agent simulator at this point, with all the changes coming for 5.0.