[RTADPA BW Tests]: not-for-merge: increase Hlt2 evtmax to 3e5

Not for merge

Only to be used in ci-testing

Note Well

The full dataset available is est. 13M events! Don't use EVTMAX=-1 ! Remember if you're doing this within a ci it's worth considering that 100k events, the default, is a relatively small sample size but still takes ~90 minutes to run.

No test time vs evtmax information has been performed so at least assume it scales linearly and consider yourself warned about fair usage of the ci testing system and the PR Machines