-Fixed the event starting upon SI spawning nearby

A big thanks to "Jugger" for helping with this.

-added RNG logic , hooray!!!
now the game can choose between two new dialogues instead of just one.

-removed junk code lines "volume".
-replaced trigger once for trigger multiple instead.
(seems way consistent on preventing just commons to trigger the event)

-reduced file size from 0.678 to 0.622 mbs by also making a simple addoninfo txt.

considering also adding a RNG logic for the game to use this line too:
"npc\chopper_pilot\hospital_intro_hello_01.wav"
yet no good results but am gonna keep trying.

-attempt to fix the trigger by moving it a bit more outside of the SI spawn range location
it seems like there is no way to prevent this 100% without workarounds darn..

fixed audio loop problem