Fix various issues with names in string interpolation (#89246)

## About The Pull Request
Commit messages should be descriptive of all changes.
The "incorrect `\The` macro capitalization" was intentional when it was
added, but as far as I know TG says "the supermatter" rather than "The
Supermatter," so it's incorrect now.
This is completely untested. I don't even know how you'd go about
testing this, it's just a fuckton of strings.
Someday I want to extract them and run NLP on it to catch grammar
problems...

## Why It's Good For The Game
Basic grammar pass for name strings. Should make `\the` work better and
avoid cases like `the John Smith`.

code/modules/power/singularity/containment_field.dm

@@ -145,7 +145,7 @@
 		if(prob(20))
 			user.Stun(40)
 		user.take_overall_damage(burn = shock_damage)
-		user.visible_message(span_danger("[user.name] is shocked by the [src.name]!"), \
+		user.visible_message(span_danger("[user.name] is shocked by \the [src]!"), \
 		span_userdanger("Energy pulse detected, system damaged!"), \
 		span_hear("You hear an electrical crack."))
 

code/modules/power/singularity/emitter.dm

@@ -282,7 +282,7 @@
 	if(welded)
 		if(!item.tool_start_check(user, amount=1))
 			return TRUE
-		user.visible_message(span_notice("[user.name] starts to cut the [name] free from the floor."), \
+		user.visible_message(span_notice("[user.name] starts to cut \the [src] free from the floor."), \
 			span_notice("You start to cut [src] free from the floor..."), \
 			span_hear("You hear welding."))
 		if(!item.use_tool(src, user, 20, 1, 50))
@@ -298,7 +298,7 @@
 		return TRUE
 	if(!item.tool_start_check(user, amount=1))
 		return TRUE
-	user.visible_message(span_notice("[user.name] starts to weld the [name] to the floor."), \
+	user.visible_message(span_notice("[user.name] starts to weld \the [src] to the floor."), \
 		span_notice("You start to weld [src] to the floor..."), \
 		span_hear("You hear welding."))
 	if(!item.use_tool(src, user, 20, 1, 50))

code/modules/power/singularity/field_generator.dm

@@ -252,7 +252,7 @@ no power level overlay is currently in the overlays list.
 		check_power_level()
 		return TRUE
 	else
-		visible_message(span_danger("The [name] shuts down!"), span_hear("You hear something shutting down."))
+		visible_message(span_danger("\The [src] shuts down!"), span_hear("You hear something shutting down."))
 		turn_off()
 		investigate_log("ran out of power and DEACTIVATED.", INVESTIGATE_ENGINE)
 		power = 0

code/modules/power/singularity/singularity.dm

@@ -454,7 +454,7 @@
 		if(istype(stunned_human.glasses, /obj/item/clothing/glasses/meson))
 			var/obj/item/clothing/glasses/meson/check_meson = stunned_human.glasses
 			if(check_meson.vision_flags & SEE_TURFS)
-				to_chat(stunned_human, span_notice("You look directly into the [name], good thing you had your protective eyewear on!"))
+				to_chat(stunned_human, span_notice("You look directly into \the [src], good thing you had your protective eyewear on!"))
 				continue
 
 		apply_stun(stunned_mob)
@@ -462,8 +462,8 @@
 /obj/singularity/proc/apply_stun(mob/living/carbon/stunned_mob)
 	stunned_mob.apply_effect(60, EFFECT_STUN)
 	stunned_mob.visible_message(
-		span_danger("[stunned_mob] stares blankly at the [name]!"),
-		span_userdanger("You look directly into the [name] and feel weak.")
+		span_danger("[stunned_mob] stares blankly at \the [src]!"),
+		span_userdanger("You look directly into \the [src] and feel weak.")
 	)
 
 /obj/singularity/proc/emp_area()