Wraps lowertext() to ensure proper stringification. (#82442)

## About The Pull Request

Fixes #82440

This PR just creates a new macro, `LOWER_TEXT()` (yes the irony is not
lost on me) to wrap around all calls of `lowertext()` and ensure that
whatever we input into that proc will be stringified using the `"[]"`
(or `tostring()` for the nerds) operator. very simple.

I also added a linter to enforce this (and prevent all forms of
regression) because I think that machines should do the menial work and
we shouldn't expect maintainers to remember this, let me know if you
disagree. if there is a time when it should be opted out for some
reason, the linter does respect it if you wrap your input with the
`UNLINT()` function.

code/modules/client/client_procs.dm

@@ -34,7 +34,7 @@ GLOBAL_LIST_INIT(blacklisted_builds, list(
 		return
 
 #ifndef TESTING
-	if (lowertext(hsrc_command) == "_debug") //disable the integrated byond vv in the client side debugging tools since it doesn't respect vv read protections
+	if (LOWER_TEXT(hsrc_command) == "_debug") //disable the integrated byond vv in the client side debugging tools since it doesn't respect vv read protections
 		return
 #endif
 

code/modules/client/preferences/glasses.dm

@@ -11,7 +11,7 @@
 	if (value == "Random")
 		return icon('icons/effects/random_spawners.dmi', "questionmark")
 	else
-		return icon('icons/obj/clothing/glasses.dmi', "glasses_[lowertext(value)]")
+		return icon('icons/obj/clothing/glasses.dmi', "glasses_[LOWER_TEXT(value)]")
 
 /datum/preference/choiced/glasses/is_accessible(datum/preferences/preferences)
 	if (!..(preferences))

code/modules/client/preferences/middleware/antags.dm

@@ -180,4 +180,4 @@ GLOBAL_LIST_INIT(non_ruleset_antagonists, list(
 /// Serializes an antag name to be used for preferences UI
 /proc/serialize_antag_name(antag_name)
 	// These are sent through CSS, so they need to be safe to use as class names.
-	return lowertext(sanitize_css_class_name(antag_name))
+	return LOWER_TEXT(sanitize_css_class_name(antag_name))