Fixes level 1 singularity eating containment field and being able to move (#87717)

## About The Pull Request

Fixes: https://github.com/tgstation/tgstation/issues/87716

Fixes this 


https://github.com/user-attachments/assets/d31c5f97-1576-404b-8427-a4089446fd5f
## Why It's Good For The Game
Its a fix pr
## Changelog
🆑 Rengan
fix: fixes singularity eating containtment field
/🆑

code/modules/power/singularity/singularity.dm

@@ -66,6 +66,7 @@
 	var/datum/component/singularity/new_component = AddComponent(
 		singularity_component_type, \
 		consume_callback = CALLBACK(src, PROC_REF(consume)), \
+		roaming = (move_self && current_size >= STAGE_TWO), \
 	)
 
 	singularity_component = WEAKREF(new_component)