Use content-parser-output RL SkinModule feature

Require MW 1.36

Bug: T277218
Depends-On: I52f752aa782b09a51e2165300cc75d0e47fa3351
Change-Id: Ia1eec412111e8f6af3b45affdc186d9eafd4262c

includes/templates/Footer.mustache

@@ -20,5 +20,4 @@
 	{{#data-info}}{{>Footer__row}}{{/data-info}}
 	{{#data-places}}{{>Footer__row}}{{/data-places}}
 	{{#data-icons}}{{>Footer__row}}{{/data-icons}}
-	<div style="clear: both;"></div>
 </footer>

resources/skins.vector.styles/legacy/layout.less

@@ -61,13 +61,6 @@ body {
 	z-index: @z-index-base;
 }
 
-#bodyContent {
-	// Clearfix here for legacy reasons of floated children (gadgets?),
-	// to be revisited to clarify historic need and possibly remove.
-	// Only apply to the main content area (T263445)
-	.mixin-clearfix();
-}
-
 /* Head */
 #mw-page-base {
 	.vertical-gradient( @background-color-base, @background-color-secondary, 50%, 100% );

skin.json

@@ -12,7 +12,7 @@
 	"license-name": "GPL-2.0-or-later",
 	"type": "skin",
 	"requires": {
-		"MediaWiki": ">= 1.35.0"
+		"MediaWiki": ">= 1.36.0"
 	},
 	"ValidSkinNames": {
 		"vector": {
@@ -119,7 +119,8 @@
 				"elements": true,
 				"content": true,
 				"interface": true,
-				"legacy": true
+				"legacy": true,
+				"content-parser-output": true
 			},
 			"targets": [
 				"desktop",