Site Editor Sidebar: improvements to buttons (WordPress#51762)

* Do not show tooltip from all "back" buttons

* Avoid double button rendering in the patterns screen

* Use as prop instead of classname

* Add translation to strings

packages/edit-site/src/components/add-new-pattern/index.js

@@ -12,8 +12,8 @@ import { privateApis as routerPrivateApis } from '@wordpress/router';
  */
 import CreatePatternModal from '../create-pattern-modal';
 import CreateTemplatePartModal from '../create-template-part-modal';
-import { unlock } from '../../lock-unlock';
 import SidebarButton from '../sidebar-button';
+import { unlock } from '../../lock-unlock';
 
 const { useHistory } = unlock( routerPrivateApis );
 
@@ -66,13 +66,11 @@ export default function AddNewPattern() {
 						title: __( 'Create pattern' ),
 					},
 				] }
-				icon={
-					<SidebarButton
-						icon={ plus }
-						label={ __( 'Create pattern' ) }
-					/>
-				}
-				label={ __( 'Create pattern.' ) }
+				toggleProps={ {
+					as: SidebarButton,
+				} }
+				icon={ plus }
+				label={ __( 'Create pattern' ) }
 			/>
 			{ showPatternModal && (
 				<CreatePatternModal

packages/edit-site/src/components/sidebar-navigation-screen/index.js

@@ -61,14 +61,16 @@ export default function SidebarNavigationScreen( {
 						<NavigatorToParentButton
 							as={ SidebarButton }
 							icon={ isRTL() ? chevronRight : chevronLeft }
-							aria-label={ __( 'Back' ) }
+							label={ __( 'Back' ) }
+							showTooltip={ false }
 						/>
 					) }
 					{ ! isRoot && backPath && (
 						<SidebarButton
 							onClick={ () => goTo( backPath, { isBack: true } ) }
 							icon={ icon }
 							label={ __( 'Back' ) }
+							showTooltip={ false }
 						/>
 					) }
 					{ isRoot && (