Revert "Don't load mediawiki.ui.button on page load"

This reverts commit 693087b886.

Reason for revert: This was a bug in my code. Sorry about that.

Change-Id: Ia3bb8d2b38e179a570f94bfd1d989bb51fab41e4

extension.json

@@ -157,7 +157,6 @@
 				"vector-2022": "css/ext.uls-vector.less"
 			},
 			"dependencies": [
-				"mediawiki.ui.button",
 				"jquery.uls.data",
 				"mediawiki.api",
 				"mediawiki.cookie",
@@ -173,7 +172,8 @@
 			"dependencies": [
 				"mediawiki.jqueryMsg",
 				"mediawiki.language",
-				"ext.uls.common"
+				"ext.uls.common",
+				"mediawiki.ui.button"
 			],
 			"messages": [
 				"ext-uls-compact-link-count",

resources/js/ext.uls.compactlinks.js

@@ -190,9 +190,7 @@
 			this.compactList[ language ].parentNode.style.display = '';
 		}
 
-		mw.loader.using( 'mediawiki.ui.button' ).then( function () {
-			this.addTrigger();
-		} );
+		this.addTrigger();
 
 		mw.hook( 'mw.uls.compactlinks.initialized' ).fire( true );
 	};