Update the local copy of preferences before saving to reflect other module changes

Change-Id: Idfd6d4f71eff9d1a1e6606b3fa91abf9ddc7b183

resources/js/ext.uls.ime.js

@@ -69,6 +69,8 @@
 				return;
 			}
 
+			// get updated copy of preferences
+			inputPreferences = mw.uls.preferences();
 			inputPreferences.set( 'ime', this.registry );
 			inputPreferences.save( callback );
 			// reset the dirty bit

resources/js/ext.uls.webfonts.js

@@ -36,6 +36,8 @@
 		},
 
 		save: function ( callback ) {
+			// get updated copy of preferences
+			ulsPreferences = mw.uls.preferences();
 			ulsPreferences.set( 'webfonts', this.registry );
 			ulsPreferences.save( callback );
 		},