ix issue with changeling internals not persisting after transformation (#23519)

Ensure that changeling internals are retained after transformation to prevent them from being disabled, especially on Lavaland.

Co-authored-by: Pierre-Louis <hernandezpierrelouis@protonmail.com>

code/modules/antagonists/changeling/changeling_power.dm

@@ -94,9 +94,12 @@
 
 // Transform the target to the chosen dna. Used in transform.dm and tiny_prick.dm (handy for changes since it's the same thing done twice)
 /datum/action/changeling/proc/transform_dna(mob/living/carbon/human/H, datum/dna/D)
+	var/internals_on = H.internal
 	if(!D)
 		return
 	var/changes_species = TRUE
 	if(H.dna.species.name == D.species.name)
 		changes_species = FALSE
 	H.change_dna(D, changes_species)
+	if(internals_on)
+		H.internal = internals_on