Spacing cleanup after scrutinizer analysis

Author: Willem Wigman

src/Plugin/CategoryLayoutPlugin.php

@@ -99,7 +99,7 @@ public function afterFetchAvailableFiles(
 
         return array_merge($result, array_filter(
             array_map(
-                function (string $handle) use ($category) : ?string {
+                function(string $handle) use ($category) : ?string {
                     preg_match(
                         '/^catalog\_category\_view\_selectable\_0\_([a-z0-9]+)/i',
                         $handle,

src/Plugin/PageLayoutPlugin.php

@@ -110,7 +110,7 @@ public function afterFetchAvailableFiles(
 
         return array_filter(
             array_map(
-                function (string $handle) : ?string {
+                function(string $handle) : ?string {
                     preg_match(
                         '/^cms\_page\_view\_selectable\_0\_([a-z0-9]+)/i',
                         $handle,

src/Plugin/ProductLayoutPlugin.php

@@ -97,7 +97,7 @@ public function afterFetchAvailableFiles(
 
         return array_filter(
             array_map(
-                function (string $handle) : ?string {
+                function(string $handle) : ?string {
                     preg_match(
                         '/^catalog\_product\_view\_selectable\_0\_([a-z0-9]+)/i',
                         $handle,