[Hygiene] [Mustache] improve template parameters and docs

Add typing expectations to search box template parameters. Add context
expectations to search box and tabs templates.

Bug: T239248
Change-Id: I4ff1920f5489b68ef73a219ceeceb1f5511fc9e8

includes/VectorTemplate.php

@@ -457,8 +457,8 @@ class VectorTemplate extends BaseTemplate {
 	 */
 	private function renderSearchComponent( TemplateParser $templateParser ) {
 		$props = [
-			'searchHeaderAttrs' => $this->data[ 'userlangattributes' ] ?? '',
-			'searchAction' => $this->data[ 'wgScript' ] ?? '',
+			'searchHeaderAttrsHTML' => $this->data[ 'userlangattributes' ] ?? '',
+			'searchActionURL' => $this->data[ 'wgScript' ] ?? '',
 			'searchDivID' => $this->config->get( 'VectorUseSimpleSearch' ) ? 'simpleSearch' : '',
 			'searchInputHTML' => $this->makeSearchInput( [ 'id' => 'searchInput' ] ),
 			'titleHTML' => Html::hidden( 'title', $this->data[ 'searchtitle' ] ?? null ),

includes/templates/SearchComponent.mustache

@@ -1,8 +1,18 @@
+{{!
+	string|null searchHeaderAttrsHTML
+	string|null searchInputLabel
+	string searchActionURL
+	string searchDivID
+	string|null searchInputHTML
+	string|null titleHTML
+	string|null fallbackSearchButtonHTML
+	string|null searchButtonHTML
+}}
 <div id="p-search" role="search">
-	<h3 {{{searchHeaderAttrs}}}>
+	<h3 {{{searchHeaderAttrsHTML}}}>
 		<label for="searchInput">{{searchInputLabel}}</label>
 	</h3>
-	<form action="{{searchAction}}" id="searchform">
+	<form action="{{searchActionURL}}" id="searchform">
 		<div id="{{searchDivID}}">
 			{{{searchInputHTML}}}
 			{{{titleHTML}}}

includes/templates/VectorTabs.mustache

@@ -1,3 +1,11 @@
+{{!
+	string tabs-id
+	string|null empty-portlet
+	string label-id
+	string|null msg-label
+	string|null html-userlangattributes
+	string|null html-items
+}}
 <div id="{{tabs-id}}" role="navigation" class="vectorTabs {{empty-portlet}}" aria-labelledby="{{label-id}}">
 	<h3 id="{{label-id}}">{{msg-label}}</h3>
 	<ul {{{html-userlangattributes}}}>