Changes Corporate Protection Synth preset to use hvh radio (#3901)

# About the pull request
As title
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# Explain why it's good for the game
Survivors are not meant to be contacting marines on their radio
channels.
# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
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# Changelog
:cl:
fix: Fixes another synth survivor variant having marine comms.
/:cl:

code/modules/gear_presets/synths.dm

@@ -394,7 +394,7 @@
 	idtype = /obj/item/card/id/pmc
 	equipment_to_spawn = list(
 		WEAR_HEAD = /obj/item/clothing/head/helmet/marine/veteran/pmc,
-		WEAR_L_EAR = /obj/item/device/radio/headset/distress/pmc,
+		WEAR_L_EAR = /obj/item/device/radio/headset/distress/pmc/hvh,
 		WEAR_EYES = /obj/item/clothing/glasses/sunglasses/sechud,
 		WEAR_BODY = /obj/item/clothing/under/marine/veteran/pmc,
 		WEAR_ACCESSORY = /obj/item/clothing/accessory/storage/droppouch,