perfetto_cmd guardrails: account for cfgs with trigger timeouts
perfetto_cmd guardrails: account for cfgs with trigger timeouts

As far as I can tell, this should be killing background traces at the
time of writing.

Bug: 130543265
Change-Id: I6d56631cca127ccef39c446f3fd3f06977034d04
google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto