chore(ui5-side-navigation): remove flashing on hover (#12173)

Transition was causing flashing on hovering items in collapsed side navigation

Author: kskondov

packages/fiori/src/themes/SideNavigationItemBase.css

@@ -34,6 +34,10 @@
 	display: none;
 }
 
+:host([side-nav-collapsed]) .ui5-sn-item {
+	transition: none;
+}
+
 :host([design="Action"]) {
 	color:  var(--sapButton_TextColor);
 }
@@ -235,7 +239,7 @@ and there is an additional border that appears on hover. */
 	padding-inline-start: 0.25rem;
 }
 
-:host([unselectable]:not([side-nav-collapsed])) .ui5-sn-item-toggle-icon::part(root), 
+:host([unselectable]:not([side-nav-collapsed])) .ui5-sn-item-toggle-icon::part(root),
 :host(:not([side-nav-collapsed])) .ui5-sn-item-group .ui5-sn-item-toggle-icon::part(root),
 :host([unselectable][side-nav-collapsed]) .ui5-sn-item:not(.ui5-sn-item-active):not(.ui5-sn-item-no-hover-effect):hover .ui5-sn-item-toggle-icon,
 :host([unselectable][side-nav-collapsed]) .ui5-sn-item:not(.ui5-sn-item-active):not(.ui5-sn-item-no-hover-effect):focus .ui5-sn-item-toggle-icon {

packages/fiori/src/themes/sap_horizon/SideNavigation-parameters.css

@@ -33,7 +33,7 @@
 	--_ui5_side_navigation_group_icon_width: 2.5rem;
 	--_ui5_side_navigation_icon_padding_inline_end: 0.5rem;
 	--_ui5_side_navigation_group_padding: 1rem;
-	--_ui5_side_navigation_padding-flexible: 0.5rem 0.5rem 0 0.5rem; 
+	--_ui5_side_navigation_padding-flexible: 0.5rem 0.5rem 0 0.5rem;
 	--_ui5_side_navigation_padding-fixed: 0 0.5rem 0.5rem 0.5rem;
 	--_ui5_side_navigation_popup_padding: 0.5rem;
 	--_ui5_side_navigation_popup_title_line_height: 1.5rem;

packages/fiori/src/themes/sap_horizon_dark/SideNavigation-parameters.css

@@ -33,7 +33,7 @@
 	--_ui5_side_navigation_group_icon_width: 2.5rem;
 	--_ui5_side_navigation_icon_padding_inline_end: 0.5rem;
 	--_ui5_side_navigation_group_padding: 1rem;
-	--_ui5_side_navigation_padding-flexible: 0.5rem 0.5rem 0 0.5rem; 
+	--_ui5_side_navigation_padding-flexible: 0.5rem 0.5rem 0 0.5rem;
 	--_ui5_side_navigation_padding-fixed: 0 0.5rem 0.5rem 0.5rem;
 	--_ui5_side_navigation_popup_padding: 0.5rem;
 	--_ui5_side_navigation_popup_title_line_height: 1.5rem;