Make magic disguises easier to break, reworks its spell cast (#25929)

* Make magic disguise easier to break

* add hitby

* add signal check

* update comment

* Fix check and update spell description

* Apply suggestions from code review

Co-authored-by: 1080pCat <96908085+1080pCat@users.noreply.github.com>
Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

* added signal to atom

* Revert "added signal to atom"

This reverts commit 79e2aa68d8.

* Update code/datums/spells/disguise_self.dm

Co-authored-by: Charlie Nolan <funnyman3595@gmail.com>
Signed-off-by: datlo <quentinkoyote@gmail.com>

* adress review, add spin casting

* linter fix

* actually fix linters

* i am so dumb

* fix typo

* Update code/modules/mob/living/carbon/human/species/_species.dm

Signed-off-by: DGamerL <108773801+DGamerL@users.noreply.github.com>

---------

Signed-off-by: datlo <quentinkoyote@gmail.com>
Signed-off-by: DGamerL <108773801+DGamerL@users.noreply.github.com>
Co-authored-by: 1080pCat <96908085+1080pCat@users.noreply.github.com>
Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>
Co-authored-by: Charlie Nolan <funnyman3595@gmail.com>
Co-authored-by: DGamerL <108773801+DGamerL@users.noreply.github.com>

code/modules/mob/living/carbon/human/species/_species.dm

@@ -1014,7 +1014,7 @@ It'll return null if the organ doesn't correspond, so include null checks when u
 	return TRUE
 
 /datum/species/proc/spec_hitby(atom/movable/AM, mob/living/carbon/human/H)
-	return
+	SEND_SIGNAL(H, COMSIG_SPECIES_HITBY, AM)
 
 /datum/species/proc/spec_attacked_by(obj/item/I, mob/living/user, obj/item/organ/external/affecting, intent, mob/living/carbon/human/H)
 	return