8073667: URL should not use service loader to lookup the jar protocol handler

Reviewed-by: alanb

jdk/src/java.base/share/classes/java/net/URL.java

@@ -1248,7 +1248,7 @@ public final class URL implements java.io.Serializable {
                 checkedWithFactory = true;
             }
 
-            if (handler == null) {
+            if (handler == null && !protocol.equalsIgnoreCase("jar")) {
                 handler = lookupViaProviders(protocol);
             }
         }