Demo Patch 3.5 - A few optimizations to reduce stuttering

This small patch implements several improvements we learned during the Quest 3 port to maintain visual quality while improving performance. Most changes will not be noticeable to the naked eye.

• Made longer audio files stream in to reduce stutters

• Replaced background bottles in the staffroom with tailored opaque bottles to improve draw call performance

• Created a special unlit shader that uses the average light probe color to maintain a flat look with correct environmental coloring. This will be used for various background elements.

• Fixed an issue where particles and liquids inside glasses were briefly visible when pulling the reset lever

• Rewrote the Item Spawner to prevent stuttering during bar loadup

• Oculus Reset View now recenters properly

• Optimized texture resolutions to reduce wasted memory and space

• Flares now fade in and out using a Material Property Block

• Liquids in RTDs are now disabled when not in use

From here, we'll likely release one more update to fix the character controller, but aside from that, we'll be putting our full focus on the full game!

Also, I'm not sure if anyone here is interested, but the demo will be coming to Meta Quest 3 standalone this October.