[MIRROR] Change how legacy output is hidden for 516 to remove chat flickering (#9667)

Co-authored-by: ShadowLarkens <shadowlarkens@gmail.com>

interface/skin.dmf

@@ -1287,7 +1287,48 @@ window "mapwindow"
 window "outputwindow"
 	elem "outputwindow"
 		type = MAIN
-		pos = 281,0
+		pos = 0,0
+		size = 640x480
+		anchor1 = -1,-1
+		anchor2 = -1,-1
+		background-color = none
+		saved-params = "pos;size;is-minimized;is-maximized"
+		is-pane = true
+	elem "legacy_output_selector"
+		type = CHILD
+		pos = 0,0
+		size = 640x480
+		anchor1 = 0,0
+		anchor2 = 100,100
+		saved-params = "splitter"
+		left = "output_legacy"
+		is-vert = false
+
+window "output_legacy"
+	elem "output_legacy"
+		type = MAIN
+		pos = 0,0
+		size = 640x480
+		anchor1 = -1,-1
+		anchor2 = -1,-1
+		background-color = none
+		saved-params = "pos;size;is-minimized;is-maximized"
+		is-pane = true
+	elem "output"
+		type = OUTPUT
+		pos = 0,0
+		size = 640x480
+		anchor1 = 0,0
+		anchor2 = 100,100
+		is-default = true
+		saved-params = "max-lines"
+		style = ".system {color:#FF0000;}"
+		enable-http-images = true
+
+window "output_browser"
+	elem "output_browser"
+		type = MAIN
+		pos = 0,0
 		size = 640x480
 		anchor1 = -1,-1
 		anchor2 = -1,-1
@@ -1302,19 +1343,8 @@ window "outputwindow"
 		size = 640x480
 		anchor1 = 0,0
 		anchor2 = 100,100
-		is-visible = false
-		is-disabled = true
+		background-color = none
 		saved-params = ""
-	elem "output"
-		type = OUTPUT
-		pos = 0,0
-		size = 640x480
-		anchor1 = 0,0
-		anchor2 = 100,100
-		is-default = true
-		saved-params = ""
-		style = ".system {color:#FF0000;}"
-		enable-http-images = true
 
 window "prefs_markings_subwindow"
 	elem "prefs_markings_subwindow"