[MIRROR] Engie goggles in Meson mode now respect light levels (#6028)

* Engie goggles in Meson mode now respect light levels (#36504)

* Engie goggles in Meson mode now respect light levels

Meson glasses show the surrounding terrain, but darken areas beyond line of sight and that are not lit. Engineer goggles set to Meson mode currently show all terrain at max brightness. As a result, it can be hard to even know an area is unlit until objects (or mobs) suddenly start popping in one tile away.

This change makes the Engineer goggles respect light levels like Meson glasses do.

An image for visual aid;
https://i.imgur.com/KdYmkZb.png
Left shows the current Engineer goggles. Right shows the current Meson glasses, and how the Engineer goggles will look with this change.

* Update engine_goggles.dm

* Engie goggles in Meson mode now respect light levels

code/modules/clothing/glasses/engine_goggles.dm

@@ -37,7 +37,7 @@
 		if(MODE_MESON)
 			vision_flags = SEE_TURFS
 			darkness_view = 1
-			lighting_alpha = LIGHTING_PLANE_ALPHA_INVISIBLE
+			lighting_alpha = LIGHTING_PLANE_ALPHA_MOSTLY_VISIBLE
 
 		if(MODE_TRAY) //undoes the last mode, meson
 			vision_flags = NONE
@@ -124,4 +124,4 @@
 #undef MODE_NONE
 #undef MODE_MESON
 #undef MODE_TRAY
-#undef MODE_RAD
+#undef MODE_RAD