`env_flare` flare never go through portals

[MyGamepedia]

Describe the bug

↑. You can find it in some Half Life 2 and episodes maps. This also in Portal.

https://github.com/StrataSource/Portal-2-Community-Edition/assets/103366204/deaa5ea8-11fe-497a-9d0d-00c93d963af8

Issue Map

Any with env_flare.

To Reproduce

1. Open my map for quick test. flare_test.zip
2. Place portal under env_flare.
3. Press button to launch it.
4. Pay attention that it's don't go through portals.

Operating System

Any.

[AWildErin]

In future, could you group issues like these? It'd really be easier for both you and the developers. Easier to track 1 issue than 2 which relate to the same entity having issues with portals..

[MyGamepedia]

Okay.