Re-Adds the radio noise volume slider (#96602)

## About The Pull Request
As the title said, re-adds the radio noise volume slider in the
preferences menu.


<details>
<summary>Images</summary>

Before:
<img width="920" height="770" alt="image"
src="https://github.com/user-attachments/assets/d182f6ed-7968-4fa7-a4df-73d1125e9c32"
/>

After:
<img width="920" height="770" alt="image"
src="https://github.com/user-attachments/assets/3e414130-ca04-4f76-8dbb-608bca1b84f4"
/>

</details>


## Why It's Good For The Game

People should be able to adjust the volume of radio beeps, since it can
be overwhelmingly loud when radio is really going off.

## Changelog
🆑
fix: Fixed the radio volume slider being missing in game preferences
/🆑

---------

Co-authored-by: Ghom <42542238+Ghommie@users.noreply.github.com>

code/game/objects/items/devices/radio/radio.dm

@@ -497,7 +497,6 @@
 	data["subspace"] = subspace_transmission
 	data["subspaceSwitchable"] = subspace_switchable
 	data["headset"] = FALSE
-	data["radio_noises"] = (user.client?.prefs.read_preference(/datum/preference/numeric/volume/sound_radio_noise))
 
 	return data
 
@@ -506,7 +505,6 @@
 	if(.)
 		return
 
-	var/mob/user = ui.user
 	switch(action)
 		if("frequency")
 			if(freqlock != RADIO_FREQENCY_UNLOCKED)
@@ -557,15 +555,6 @@
 				else
 					recalculateChannels()
 				. = TRUE
-		if("set_radio_volume")
-			if(!user.client)
-				return
-			user.client.prefs.write_preference(GLOB.preference_entries[/datum/preference/numeric/volume/sound_radio_noise], params["volume"])
-			//let them know what it'll sound like
-			//we get their read prefs instead of just taking the params beacuse write_preference is what handles ensuring
-			//there's no href exploits.
-			var/volume_modifier = (user.client.prefs.read_preference(/datum/preference/numeric/volume/sound_radio_noise))
-			SEND_SOUND(user, sound('sound/items/radio/radio_receive.ogg', volume = volume_modifier))
 
 /obj/item/radio/examine(mob/user)
 	. = ..()