Explicitly format Message oject instead of string cast

The implicit in Mesage::__toString, as called when the object
is accepted by a method that needs a string, is to format
with parse(). Call that explicitly instead, or use escaped()
in places where it seems like elaborate wikitext isn't expected.

Change-Id: I9f1de3a0047d1f26d30c8607a0a79543d166176f

includes/Menu/PageActions/ToolbarBuilder.php

@@ -163,7 +163,7 @@ class ToolbarBuilder {
 
 		$entry = new SingleMenuEntry(
 			'page-actions-contributions',
-			$label,
+			$label->escaped(),
 			SpecialPage::getTitleFor( 'Contributions', $user->getName() )->getLocalURL() );
 		$entry->setTitle( $label )
 			->trackClicks( 'contributions' )
@@ -199,7 +199,7 @@ class ToolbarBuilder {
 
 		$entry = new SingleMenuEntry(
 			'page-actions-edit',
-			$this->messageLocalizer->msg( 'mobile-frontend-editor-edit' ),
+			$this->messageLocalizer->msg( 'mobile-frontend-editor-edit' )->escaped(),
 			$title->getLocalURL( $editArgs ),
 			'edit-page'
 		);

includes/MinervaHooks.php

@@ -175,7 +175,7 @@ class MinervaHooks {
 					$enhanced = $request->getBool( 'enhanced', $isEnhancedDefaultForUser );
 					if ( $enhanced ) {
 						$out->addHTML( Html::warningBox(
-							$special->msg( 'skin-minerva-recentchanges-warning-enhanced-not-supported' )
+							$special->msg( 'skin-minerva-recentchanges-warning-enhanced-not-supported' )->parse()
 						) );
 					}
 					break;

includes/Skins/MinervaTemplate.php

@@ -257,7 +257,7 @@ class MinervaTemplate extends BaseTemplate {
 				'class' => MinervaUI::iconClass(
 					'search-base20', 'element', 'skin-minerva-search-trigger', 'wikimedia'
 				)
-			], wfMessage( 'searchbutton' ) ),
+			], wfMessage( 'searchbutton' )->escaped() ),
 			'userNotificationsHTML' => $data['userNotificationsHTML'] ?? '',
 			'data-main-menu' => $this->getMainMenuData( $data ),
 			'hasheadingholder' => $hasHeadingHolder,