Fix hitscan visuals

[ElectroJr]

About the PR

Fixes hitscan visuals when shooting across grids.

Technical details

This PR just makes sure that the angle passed in the event is always relative to the entity associated with the fromCoordinate, and makes sure that all the parts of the beam have the same world rotation.

I finished this PR after fixing #34482, but before realising that there is already an open PR that also tries to fix this (#28797), though it's been stuck waiting on an engine PR that was waiting for reviews/responses. I'm not sure about the required engine changes and think a better fix would be to just combine the laser effect into a singular entity (which this neither PR does).

In the meantime, this PR still fixes the main issue w/o requiring any engine changes, though it doesn't fix the problem that the beam can split when grids move or rotate.

fixes #23699

Media

Before: see video in #5365

After:

Content.Client_EnDBPw28Yi.mp4

Requirements

• I have read and am following the Pull Request and Changelog Guidelines.
• I have added media to this PR or it does not require an ingame showcase.

Changelog

IMO @n00kii still deserves the credit for initially working on a fix for this bug, but if they don't want their name on the CL I can remove it

🆑 n00kii

• fix: Fixed laser weapon visuals being broken when shooting across grids or into space.