Xeno update icon fixes

[Drulikar]

About the pull request

This PR does a few things:

• Removes duplicate update_wounds calls (update_icons itself will call update_wounds)
• Simplifies some logic for acid_overlay (namely just an in check that could be done w/ |= instead)
• Removes some calls to xeno update_icons that seemed pointless
• Simplifies some calls previously to xeno update_icons that merely wanted the behavior delegate on_update_icons logic
• Fixes the FIX ME icon state for designer choose design ability due to unnecessary logic adding extra overlays
• Fixes charger strain not even calling stop_momentum if you simply stop moving. Very goofy to charge, stand still, and then turn/move and suddenly you skid to a halt and finally raise your head. 0.5 seconds is just copied from existing logic so it probably is too lenient (especially since this is checking on Life interval); but also most of the behavior logic shoved into the button ought to be refactored into the behavior delegate instead.

Explain why it's good for the game

• Hopefully less self cpu time for /mob/living/carbon/xenomorph/update_icons
• Fixed goofiness with charger
• Fixed this

Testing Photographs and Procedure

Screenshots & Videos

https://youtu.be/lR9WlbwenNE

Changelog

🆑 Drathek
code: Removed/simplified some unnecessary calls to xeno update_icons
fix: Fixed designer button saying FIX ME when first selecting the strain
fix: Fixed charger crusher not ever stopping a charge if you simply stop moving
/:cl:

[cm13-github]

Test merge deployment history:

Test Merge Deployed @ 05/20/2026 07:24:34 +00:00:

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CM13 Live

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Origin: 03d45a3
Pull Request: 431ccbe
Server: db65c06

Test Merge Updated @ 05/20/2026 17:54:17 +00:00:

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Origin: c95e9b1
Pull Request: 431ccbe
Server: 3280e9154949182c4e51ee27602a16ed75001565

Test Merge Updated @ 05/20/2026 22:56:32 +00:00:

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CM13 Live

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Origin: a46fad7
Pull Request: 431ccbe
Server: fb7be4f1bfbd6edaf862a67b770100fb826b4fa6

Test Merge Updated @ 05/20/2026 23:27:20 +00:00:

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CM13 Live

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Origin: 3400df7
Pull Request: 431ccbe
Server: b0cf5e6

Test Merge Updated @ 05/20/2026 23:58:08 +00:00:

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Origin: 05f844d
Pull Request: 431ccbe
Server: e05d3bffb5af57228f87f5ea7e53f0aaf8efcd45

Test Merge Updated @ 05/21/2026 00:28:58 +00:00:

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Origin: f4f02d0
Pull Request: 431ccbe
Server: 66f94a611a94e93292e3ee078228929c17a40a79

Test Merge Updated @ 05/21/2026 00:59:48 +00:00:

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CM13 Live

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Origin: 58fc60a
Pull Request: 431ccbe
Server: 42ff026

Test Merge Updated @ 05/21/2026 01:30:42 +00:00:

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Origin: 2104086
Pull Request: 431ccbe
Server: 34b682f2ec12fe202bbfed0650de5dd8fdb3d171

Test Merge Updated @ 05/21/2026 04:32:09 +00:00:

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CM13 Live

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Origin: 583cbcd
Pull Request: 431ccbe
Server: 8370b689eb8f7a8fc27dec335a12d1e370909568

Test Merge Updated @ 05/22/2026 00:39:01 +00:00:

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Origin: 583cbcd
Pull Request: 431ccbe
Server: e6ee75c

Test Merge Updated @ 05/22/2026 01:40:04 +00:00:

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Origin: 579457c
Pull Request: 431ccbe
Server: 5077583f3db971aac04b915045a3e4cff448258b

Test Merge Updated @ 05/22/2026 04:11:23 +00:00:

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Origin: 776c4a6
Pull Request: 431ccbe
Server: aa6b594cf5f372f9fd261c17b9cc08289e69f3e3

Test Merge Updated @ 05/22/2026 14:14:57 +00:00:

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Origin: 6d8a35f
Pull Request: 431ccbe
Server: f32a9a785e7b27a2c504f88b437161b3b6568e2a

Test Merge Updated @ 05/22/2026 14:45:49 +00:00:

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Origin: 7cd9b89
Pull Request: 431ccbe
Server: 432c8f6af683f307ca5e93d52e80d1107d620c53

Test Merge Updated @ 05/22/2026 22:18:38 +00:00:

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Origin: 7cd9b89
Pull Request: 431ccbe
Server: 753f1f6

Test Merge Updated @ 05/23/2026 03:50:39 +00:00:

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Origin: 4412c87
Pull Request: 431ccbe
Server: f93494153429cf9e2fd1691a41e3701ac63e9908

Test Merge Updated @ 05/23/2026 04:51:36 +00:00:

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Origin: 4412c87
Pull Request: 431ccbe
Server: 27cfb8a

Test Merge Updated @ 05/23/2026 16:14:49 +00:00:

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Origin: 4412c87
Pull Request: 431ccbe
Server: 3156670

Test Merge Updated @ 05/23/2026 16:25:09 +00:00:

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Origin: 3d558ec
Pull Request: 431ccbe
Server: f9f92f73e48de6d52d3be8c3efda2f16b4ec271b

Test Merge Updated @ 05/23/2026 16:54:29 +00:00:

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Origin: 3d558ec
Pull Request: 431ccbe
Server: 1107c0538fa970ab344b805080dede1e0cb50114

Test Merge Updated @ 05/23/2026 23:57:15 +00:00:

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Origin: a7e8c2a
Pull Request: 431ccbe
Server: f3dd2ce

Test Merge Updated @ 05/24/2026 00:27:19 +00:00:

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Origin: b8fcfd6
Pull Request: 431ccbe
Server: a369ff9

Test Merge Updated @ 05/24/2026 02:28:27 +00:00:

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Origin: b8fcfd6
Pull Request: 431ccbe
Server: c6143156b0b0ecd8ca9138420175cce2034dcece