OZG-961 fix darkmode toggle for keyboard

goofy-client/libs/navigation/src/lib/header-container/header/settings/settings.component.html

-<goofy-client-icon-button-with-spinner icon="settings" [matMenuTriggerFor]="settingsMenu"></goofy-client-icon-button-with-spinner>
+<goofy-client-icon-button-with-spinner
+		icon="settings"
+		[matMenuTriggerFor]="settingsMenu"
+		(menuOpened)="toggle.focus()">
+</goofy-client-icon-button-with-spinner>
+
 <mat-menu #settingsMenu="matMenu" >
 	<div class="menu-container"
 		(click)="$event.stopPropagation()">
 
-		<mat-slide-toggle color="primary"
+		<mat-slide-toggle color="primary" #toggle
 			[checked]="darkMode"
 			(change)="darkModeEmitter.emit($event.checked)">Dark Mode
 		</mat-slide-toggle>

goofy-client/libs/navigation/src/lib/header-container/header/settings/settings.component.scss

 .menu-container {
 	margin: 12px 16px;
 }
+
+goofy-client-icon-button-with-spinner {
+	display: block;
+}