Fix PMD reported problems

Author: AB-xdev

spring-security-advanced-authentication-ui/src/main/java/software/xdev/spring/security/web/authentication/ui/extendable/filters/ExtendableDefaultLoginPageGeneratingFilter.java

@@ -352,16 +352,14 @@ protected String renderPasskeyLogin()
 
 	protected String renderHeaders(final HttpServletRequest request)
 	{
-		final StringBuilder javascriptHeadersEntries = new StringBuilder();
-		final Map<String, String> headers = this.resolveHeaders.apply(request);
-		for(final Map.Entry<String, String> header : headers.entrySet())
-		{
-			javascriptHeadersEntries.append(HtmlTemplates.fromTemplate(CSRF_HEADERS)
+		return this.resolveHeaders.apply(request)
+			.entrySet()
+			.stream()
+			.map(header -> HtmlTemplates.fromTemplate(CSRF_HEADERS)
 				.withValue("headerName", header.getKey())
 				.withValue("headerValue", header.getValue())
-				.render());
-		}
-		return javascriptHeadersEntries.toString();
+				.render())
+			.collect(Collectors.joining());
 	}
 
 	protected String renderFormLogin(

spring-security-advanced-authentication-ui/src/main/java/software/xdev/spring/security/web/authentication/ui/extendable/filters/ExtendableDefaultLogoutPageGeneratingFilter.java

@@ -20,6 +20,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Function;
+import java.util.stream.Collectors;
 
 import jakarta.servlet.FilterChain;
 import jakarta.servlet.ServletException;
@@ -113,16 +114,14 @@ public void setResolveHiddenInputs(final Function<HttpServletRequest, Map<String
 		"PMD.InefficientStringBuffering"})
 	protected String renderHiddenInputs(final HttpServletRequest request)
 	{
-		final StringBuilder sb = new StringBuilder();
-		for(final Map.Entry<String, String> input : this.resolveHiddenInputs.apply(request).entrySet())
-		{
-			final String inputElement = HtmlTemplates.fromTemplate(HIDDEN_HTML_INPUT_TEMPLATE)
+		return this.resolveHiddenInputs.apply(request)
+			.entrySet()
+			.stream()
+			.map(input -> HtmlTemplates.fromTemplate(HIDDEN_HTML_INPUT_TEMPLATE)
 				.withValue("name", input.getKey())
 				.withValue("value", input.getValue())
-				.render();
-			sb.append(inputElement);
-		}
-		return sb.toString();
+				.render())
+			.collect(Collectors.joining());
 	}
 
 	// Method is missing on upstream