fix(server): Add return statement for bundle.getString(descriptionI18nKey)

Author: codeboyzhou

src/main/java/com/github/codeboyzhou/mcp/declarative/server/factory/AbstractMcpServerComponentFactory.java

@@ -18,7 +18,7 @@ protected AbstractMcpServerComponentFactory(Injector injector) {
 
     protected String getDescription(String descriptionI18nKey, String description) {
         if (!descriptionI18nKey.isBlank() && bundle.containsKey(descriptionI18nKey)) {
-            bundle.getString(descriptionI18nKey);
+            return bundle.getString(descriptionI18nKey);
         }
         if (!description.isBlank()) {
             return description;