chore(quark_uc): webdav_policy default to native_proxy

Author: j2rong4cn

drivers/quark_uc/driver.go

@@ -37,10 +37,11 @@ func (d *QuarkOrUC) GetAddition() driver.Additional {
 func (d *QuarkOrUC) Init(ctx context.Context) error {
 	_, err := d.request("/config", http.MethodGet, nil, nil)
 	if err == nil {
-		if d.AdditionVersion != 1 {
-			d.AdditionVersion = 1
-			if !d.UseTransCodingAddress {
+		if d.AdditionVersion != 2 {
+			d.AdditionVersion = 2
+			if !d.UseTransCodingAddress && len(d.DownProxyUrl) == 0 {
 				d.WebProxy = true
+				d.WebdavPolicy = "native_proxy"
 			}
 		}
 	}