fix(ui5-switch): don`t mirror checkmark icon in RTL (#742)

Author: ilhan007

packages/main/src/Switch.hbs

@@ -12,7 +12,7 @@
 			<div class="ui5-switch-slider">
 				{{#if graphical}}
 					<span class="ui5-switch-text ui5-switch-text--on">
-						<ui5-icon src="sap-icon://accept" class="ui5-switch-icon-on"></ui5-icon>
+						<ui5-icon src="sap-icon://accept" dir="ltr" class="ui5-switch-icon-on"></ui5-icon>
 					</span>
 					<span class="ui5-switch-text ui5-switch-text--off">
 						<ui5-icon src="sap-icon://decline" class="ui5-switch-icon-off"></ui5-icon>