Refactor fillCorsHeader to be non-static for proper dependency injection

Author: aditya-baldwa

api/src/main/java/io/kafbat/ui/exception/GlobalErrorWebExceptionHandler.java

@@ -12,6 +12,7 @@
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.web.WebProperties;
 import org.springframework.boot.autoconfigure.web.reactive.error.AbstractErrorWebExceptionHandler;
 import org.springframework.boot.web.reactive.error.ErrorAttributes;
@@ -38,6 +39,9 @@
 @Order(Ordered.HIGHEST_PRECEDENCE)
 public class GlobalErrorWebExceptionHandler extends AbstractErrorWebExceptionHandler {
 
+  @Autowired
+  private CorsGlobalConfiguration corsGlobalConfiguration;
+
   public GlobalErrorWebExceptionHandler(ErrorAttributes errorAttributes,
                                         ApplicationContext applicationContext,
                                         ServerCodecConfigurer codecConfigurer) {
@@ -151,7 +155,7 @@ private String requestId(ServerRequest request) {
   }
 
   private Consumer<HttpHeaders> headers(ServerRequest request) {
-    return CorsGlobalConfiguration::fillCorsHeader;
+    return corsGlobalConfiguration::fillCorsHeader;
   }
 
   private BigDecimal currentTimestamp() {