MC-21228: Support partial word search in Elasticsearch

- query fix

Author: Prabhu Ram

app/code/Magento/CatalogSearch/etc/search_request.xml

@@ -14,19 +14,13 @@
         <queries>
             <query xsi:type="boolQuery" name="quick_search_container" boost="1">
                 <queryReference clause="should" ref="search" />
-                <queryReference clause="should" ref="partial_search" />
                 <queryReference clause="must" ref="category"/>
                 <queryReference clause="must" ref="price"/>
                 <queryReference clause="must" ref="visibility"/>
             </query>
             <query xsi:type="matchQuery" value="$search_term$" name="search">
                 <match field="*"/>
             </query>
-            <query xsi:type="matchQuery" value="$search_term$" name="partial_search">
-                <match field="*"/>
-                <match field="name" matchCondition="match_phrase_prefix"/>
-                <match field="sku" matchCondition="match_phrase_prefix"/>
-            </query>
             <query xsi:type="filteredQuery" name="category">
                 <filterReference clause="must" ref="category_filter"/>
             </query>

app/code/Magento/Elasticsearch/SearchAdapter/Query/Builder/Match.php

@@ -132,7 +132,7 @@ protected function buildQueries(array $matches, array $queryValue)
         // Checking for quoted phrase \"phrase test\", trim escaped surrounding quotes if found
         $count = 0;
         $value = preg_replace('#^"(.*)"$#m', '$1', $queryValue['value'], -1, $count);
-        $matchCondition = ($count) ? 'match_phrase' : 'match';
+        $condition = ($count) ? 'match_phrase' : 'match';
 
         $transformedTypes = [];
         foreach ($matches as $match) {
@@ -153,7 +153,7 @@ protected function buildQueries(array $matches, array $queryValue)
                 //Value is incompatible with this field type.
                 continue;
             }
-            $matchCondition = $match['matchCondition'] ?? $matchCondition;
+            $matchCondition = $match['matchCondition'] ?? $condition;
             $conditions[] = [
                 'condition' => $queryValue['condition'],
                 'body' => [