refactor(icon): minor improvements (#1769)

Author: xHeaven

packages/icon/src/Icon.php

@@ -30,7 +30,7 @@ public function __construct(
      */
     public function render(string $icon): ?string
     {
-        [$collection, $iconName] = $this->parseIconIdentifier($icon);
+        [$collection, $iconName] = $this->parseIconIdentifier($icon) ?? [null, null];
 
         if ($this->iconCache->get("icon-failure-{$collection}-{$iconName}")) {
             return null;

packages/icon/src/IconCache.php

@@ -43,6 +43,10 @@ public function get(string $key): mixed
 
     public function clear(): void
     {
+        if (! $this->enabled) {
+            return;
+        }
+
         $this->pool->clear();
     }
 

packages/icon/src/IconInitializer.php

@@ -7,7 +7,6 @@
 use Tempest\Container\Singleton;
 use Tempest\EventBus\EventBus;
 use Tempest\HttpClient\HttpClient;
-use Tempest\Icon\IconCache;
 
 final class IconInitializer implements Initializer
 {