* Fixes Seiver jank and bad code (#73496)
## About The Pull Request
Seiver is currently way stronger than it was intended due to bad code.
Also the comments didn't make any sense whatsoever and were often just
wrong.
This nerfs hot seiver significantly - it was often almost 3x stronger
than intended, able to reach tox healing levels of 17.7 per tick. With
the change, it maxes out at 6.7 tox healing per tick.
## Why It's Good For The Game
5u hot seiver can no longer heal 442 tox damage over less than a minute
## Changelog
🆑
fix: seiver no longer applies purity and delta time twice
code: made seiver code much less confusing
/🆑
* Fixes Seiver jank and bad code
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Co-authored-by: Roryl-c <5150427+Roryl-c@users.noreply.github.com>
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