🐛 fix obtaining URL, fix NoSuchMethodError

`UriComponentsBuilder.fromHttpRequest(request)` has been removed in Spring 7.0 version

Author: xuxiaowei-com-cn

springdoc-openapi-starter-webflux-ui/src/main/java/org/springdoc/webflux/ui/SwaggerWelcomeCommon.java

@@ -123,7 +123,7 @@ protected Map<String, Object> getSwaggerUiConfig(ServerHttpRequest request) {
 void buildFromCurrentContextPath(SwaggerUiConfigParameters swaggerUiConfigParameters, ServerHttpRequest request) {
 super.init(swaggerUiConfigParameters);
 swaggerUiConfigParameters.setContextPath(request.getPath().contextPath().value());
-String url = UriComponentsBuilder.fromHttpRequest(request).toUriString();
+String url = ForwardedHeaderUtils.adaptFromForwardedHeaders(request.getURI(), request.getHeaders()).toUriString();
 String target = UriComponentsBuilder.fromPath(request.getPath().contextPath().value()).toUriString();
 int endIndex = url.indexOf(target) + target.length();
 if (endIndex > 0) {